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12957087633 = 37727848699
BaseRepresentation
bin11000001000100110…
…10111011110010001
31020110000001020202120
430010103113132101
5203014003301013
65541415204453
7636042266460
oct140423273621
936400036676
1012957087633
115549a35796
122617376729
1312b6528679
148acb989d7
1550c7c7123
hex3044d7791

12957087633 has 16 divisors (see below), whose sum is σ = 19771315200. Its totient is φ = 7393856976.

The previous prime is 12957087569. The next prime is 12957087643. The reversal of 12957087633 is 33678075921.

It is not a de Polignac number, because 12957087633 - 26 = 12957087569 is a prime.

It is a super-2 number, since 2×129570876332 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12957087643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409083 + ... + 439616.

It is an arithmetic number, because the mean of its divisors is an integer number (1235707200).

Almost surely, 212957087633 is an apocalyptic number.

It is an amenable number.

12957087633 is a deficient number, since it is larger than the sum of its proper divisors (6814227567).

12957087633 is an equidigital number, since it uses as much as digits as its factorization.

12957087633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849436.

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 12957087633 in words is "twelve billion, nine hundred fifty-seven million, eighty-seven thousand, six hundred thirty-three".

Divisors: 1 3 7 21 727 2181 5089 15267 848699 2546097 5940893 17822679 617004173 1851012519 4319029211 12957087633