12688950685 has 32 divisors (see below), whose sum is σ = 15667747200. Its totient is φ = 9862076160.

The previous prime is 12688950679. The next prime is 12688950713. The reversal of 12688950685 is 58605988621.

It is not a de Polignac number, because 12688950685 - 2⁵ = 12688950653 is a prime.

It is a super-2 number, since 2×12688950685² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9707802 + ... + 9709108.

It is an arithmetic number, because the mean of its divisors is an integer number (489617100).

Almost surely, 2^12688950685 is an apocalyptic number.

It is an amenable number.

12688950685 is a deficient number, since it is larger than the sum of its proper divisors (2978796515).

12688950685 is a wasteful number, since it uses less digits than its factorization.

12688950685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 12688950685 in words is "twelve billion, six hundred eighty-eight million, nine hundred fifty thousand, six hundred eighty-five".