12516768938 has 8 divisors (see below), whose sum is σ = 19422572580. Its totient is φ = 6042578080.

The previous prime is 12516768911. The next prime is 12516768973. The reversal of 12516768938 is 83986761521.

It can be written as a sum of positive squares in 2 ways, for example, as 12516463129 + 305809 = 111877^2 + 553^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107903123 + ... + 107903238.

Almost surely, 2^12516768938 is an apocalyptic number.

12516768938 is a deficient number, since it is larger than the sum of its proper divisors (6905803642).

12516768938 is a wasteful number, since it uses less digits than its factorization.

12516768938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215806392.

The product of its digits is 4354560, while the sum is 56.

The spelling of 12516768938 in words is "twelve billion, five hundred sixteen million, seven hundred sixty-eight thousand, nine hundred thirty-eight".