12688968090 has 32 divisors (see below), whose sum is σ = 30640366656. Its totient is φ = 3362964480.

The previous prime is 12688968043. The next prime is 12688968161. The reversal of 12688968090 is 9086988621.

It is a super-2 number, since 2×12688968090² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12688968090.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1292551 + ... + 1302330.

It is an arithmetic number, because the mean of its divisors is an integer number (957511458).

Almost surely, 2^12688968090 is an apocalyptic number.

12688968090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12688968090 is an abundant number, since it is smaller than the sum of its proper divisors (17951398566).

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

12688968090 is a wasteful number, since it uses less digits than its factorization.

12688968090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595054.

The product of its (nonzero) digits is 2985984, while the sum is 57.

The spelling of 12688968090 in words is "twelve billion, six hundred eighty-eight million, nine hundred sixty-eight thousand, ninety".