12461535172 has 6 divisors (see below), whose sum is σ = 21807686558. Its totient is φ = 6230767584.

The previous prime is 12461535167. The next prime is 12461535197. The reversal of 12461535172 is 27153516421.

It can be written as a sum of positive squares in only one way, i.e., 11654066116 + 807469056 = 107954^2 + 28416^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557691893 + ... + 1557691900.

Almost surely, 2^12461535172 is an apocalyptic number.

It is an amenable number.

12461535172 is a deficient number, since it is larger than the sum of its proper divisors (9346151386).

12461535172 is a wasteful number, since it uses less digits than its factorization.

12461535172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115383797 (or 3115383795 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The spelling of 12461535172 in words is "twelve billion, four hundred sixty-one million, five hundred thirty-five thousand, one hundred seventy-two".