12865392874 has 8 divisors (see below), whose sum is σ = 19346215428. Its totient is φ = 6416654400.

The previous prime is 12865392871. The next prime is 12865392929. The reversal of 12865392874 is 47829356821.

It can be written as a sum of positive squares in 2 ways, for example, as 8818524649 + 4046868225 = 93907^2 + 63615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12865392871) 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, 8020017 + ... + 8021620.

Almost surely, 2^12865392874 is an apocalyptic number.

12865392874 is a deficient number, since it is larger than the sum of its proper divisors (6480822554).

12865392874 is a wasteful number, since it uses less digits than its factorization.

12865392874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16042040.

The product of its digits is 5806080, while the sum is 55.

The spelling of 12865392874 in words is "twelve billion, eight hundred sixty-five million, three hundred ninety-two thousand, eight hundred seventy-four".