12974115138 has 16 divisors (see below), whose sum is σ = 25951862496. Its totient is φ = 4324099680.

The previous prime is 12974115137. The next prime is 12974115151. The reversal of 12974115138 is 83151147921.

It is a super-2 number, since 2×12974115138² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12974115138.

It is not an unprimeable number, because it can be changed into a prime (12974115137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103756 + ... + 191607.

It is an arithmetic number, because the mean of its divisors is an integer number (1621991406).

Almost surely, 2^12974115138 is an apocalyptic number.

12974115138 is an abundant number, since it is smaller than the sum of its proper divisors (12977747358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12974115138 is a wasteful number, since it uses less digits than its factorization.

12974115138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302689.

The product of its digits is 60480, while the sum is 42.

The spelling of 12974115138 in words is "twelve billion, nine hundred seventy-four million, one hundred fifteen thousand, one hundred thirty-eight".