12689702361 has 24 divisors (see below), whose sum is σ = 20962707584. Its totient is φ = 7246195200.

The previous prime is 12689702353. The next prime is 12689702369. The reversal of 12689702361 is 16320798621.

It is an interprime number because it is at equal distance from previous prime (12689702353) and next prime (12689702369).

It is not a de Polignac number, because 12689702361 - 2³ = 12689702353 is a prime.

It is a super-2 number, since 2×12689702361² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12689702369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21561 + ... + 160761.

Almost surely, 2^12689702361 is an apocalyptic number.

It is an amenable number.

12689702361 is a deficient number, since it is larger than the sum of its proper divisors (8273005223).

12689702361 is a wasteful number, since it uses less digits than its factorization.

12689702361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140661 (or 140658 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 12689702361 in words is "twelve billion, six hundred eighty-nine million, seven hundred two thousand, three hundred sixty-one".