12693689168 has 20 divisors (see below), whose sum is σ = 24596271348. Its totient is φ = 6346264320.

The previous prime is 12693689161. The next prime is 12693689201. The reversal of 12693689168 is 86198639621.

It can be written as a sum of positive squares in 2 ways, for example, as 12394814224 + 298874944 = 111332^2 + 17288^2 .

It is a super-2 number, since 2×12693689168² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12693689161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185180 + ... + 244292.

Almost surely, 2^12693689168 is an apocalyptic number.

It is an amenable number.

12693689168 is a deficient number, since it is larger than the sum of its proper divisors (11902582180).

12693689168 is a wasteful number, since it uses less digits than its factorization.

12693689168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72542 (or 72536 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 59.

The spelling of 12693689168 in words is "twelve billion, six hundred ninety-three million, six hundred eighty-nine thousand, one hundred sixty-eight".