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87808741285012 = 2211311073671639357
BaseRepresentation
bin10011111101110010010000…
…110101010001110010010100
3102111220102201011020000202121
4103331302100311101302110
543002124300232110022
6510430440122345324
724331654315643536
oct2375622065216224
9374812634200677
1087808741285012
1125a84529316a70
129a21b0995b244
1339cc4374130b7
141797d7405d856
15a24190a502c7
hex4fdc90d51c94

87808741285012 has 96 divisors (see below), whose sum is σ = 175135684018176. Its totient is φ = 38160273225600.

The previous prime is 87808741284973. The next prime is 87808741285019. The reversal of 87808741285012 is 21058214780878.

It is a super-2 number, since 2×878087412850122 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87808741285019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52743238 + ... + 54382594.

It is an arithmetic number, because the mean of its divisors is an integer number (1824330041856).

Almost surely, 287808741285012 is an apocalyptic number.

It is an amenable number.

87808741285012 is a deficient number, since it is larger than the sum of its proper divisors (87326942733164).

87808741285012 is a wasteful number, since it uses less digits than its factorization.

87808741285012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639877 (or 1639875 counting only the distinct ones).

The product of its (nonzero) digits is 16056320, while the sum is 61.

The spelling of 87808741285012 in words is "eighty-seven trillion, eight hundred eight billion, seven hundred forty-one million, two hundred eighty-five thousand, twelve".

Divisors: 1 2 4 11 22 31 44 62 107 124 214 341 367 428 682 734 1177 1364 1468 2354 3317 4037 4708 6634 8074 11377 13268 16148 22754 36487 39269 45508 72974 78538 125147 145948 157076 250294 431959 500588 863918 1217339 1639357 1727836 2434678 3278714 4869356 6557428 13390729 18032927 26781458 36065854 50820067 53562916 72131708 101640134 175411199 203280268 350822398 559020737 601644019 701644796 1118041474 1203288038 1929523189 2236082948 2406576076 3859046378 5437747169 6618084209 7718092756 10875494338 13236168418 18650964589 21750988676 26472336836 37301929178 59815218859 64375910033 74603858356 119630437718 128751820066 205160610479 239260875436 257503640132 410321220958 708135010363 820642441916 1416270020726 1995653211023 2832540041452 3991306422046 7982612844092 21952185321253 43904370642506 87808741285012