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8968553641 = 191972818527
BaseRepresentation
bin10000101101001000…
…10100010010101001
3212011000220201201101
420112210110102221
5121331422204031
64041535121401
7435151306465
oct102644242251
925130821641
108968553641
113892573103
1218a3673261
13acc0bcb98
1461118b4a5
15377569361
hex2169144a9

8968553641 has 16 divisors (see below), whose sum is σ = 9523388160. Its totient is φ = 8422323840.

The previous prime is 8968553593. The next prime is 8968553687. The reversal of 8968553641 is 1463558698.

It is a cyclic number.

It is not a de Polignac number, because 8968553641 - 233 = 378619049 is a prime.

It is a super-2 number, since 2×89685536412 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8968553141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047520 + ... + 1056046.

It is an arithmetic number, because the mean of its divisors is an integer number (595211760).

Almost surely, 28968553641 is an apocalyptic number.

It is an amenable number.

8968553641 is a deficient number, since it is larger than the sum of its proper divisors (554834519).

8968553641 is a wasteful number, since it uses less digits than its factorization.

8968553641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024.

The product of its digits is 6220800, while the sum is 55.

The square root of 8968553641 is about 94702.4479145075. The cubic root of 8968553641 is about 2077.6583640211.

The spelling of 8968553641 in words is "eight billion, nine hundred sixty-eight million, five hundred fifty-three thousand, six hundred forty-one".

Divisors: 1 19 197 281 3743 5339 8527 55357 162013 1051783 1679819 2396087 31916561 45525653 472029139 8968553641