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12770290660 = 2253158735089
BaseRepresentation
bin10111110010010101…
…10010101111100100
31012221222112222111011
423321022302233210
5202123143300120
65511103352004
7631313452051
oct137112625744
935858488434
1012770290660
115463550426
1225848b2604
131286914b0a
14892052028
154eb1c9c5a
hex2f92b2be4

12770290660 has 48 divisors (see below), whose sum is σ = 27730644480. Its totient is φ = 4934776320.

The previous prime is 12770290613. The next prime is 12770290669. The reversal of 12770290660 is 6609207721.

It is not an unprimeable number, because it can be changed into a prime (12770290669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346396 + ... + 381484.

It is an arithmetic number, because the mean of its divisors is an integer number (577721760).

Almost surely, 212770290660 is an apocalyptic number.

12770290660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12770290660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13865322240).

12770290660 is an abundant number, since it is smaller than the sum of its proper divisors (14960353820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12770290660 is a wasteful number, since it uses less digits than its factorization.

12770290660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35716 (or 35714 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 12770290660 in words is "twelve billion, seven hundred seventy million, two hundred ninety thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 587 620 1174 2348 2935 5870 11740 18197 35089 36394 70178 72788 90985 140356 175445 181970 350890 363940 701780 1087759 2175518 4351036 5438795 10877590 20597243 21755180 41194486 82388972 102986215 205972430 411944860 638514533 1277029066 2554058132 3192572665 6385145330 12770290660