10512612865 has 8 divisors (see below), whose sum is σ = 12619774440. Its totient is φ = 8406997632.

The previous prime is 10512612821. The next prime is 10512612919. The reversal of 10512612865 is 56821621501.

It can be written as a sum of positive squares in 4 ways, for example, as 6642902016 + 3869710849 = 81504^2 + 62207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10512612865 - 2³¹ = 8365129217 is a prime.

It is a super-2 number, since 2×10512612865² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371574 + ... + 398863.

It is an arithmetic number, because the mean of its divisors is an integer number (1577471805).

Almost surely, 2^10512612865 is an apocalyptic number.

It is an amenable number.

10512612865 is a deficient number, since it is larger than the sum of its proper divisors (2107161575).

10512612865 is an equidigital number, since it uses as much as digits as its factorization.

10512612865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773171.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 10512612865 in words is "ten billion, five hundred twelve million, six hundred twelve thousand, eight hundred sixty-five".