13112512138 has 16 divisors (see below), whose sum is σ = 21458759040. Its totient is φ = 5959699200.

The previous prime is 13112512121. The next prime is 13112512151. The reversal of 13112512138 is 83121521131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331498 + ... + 368938.

It is an arithmetic number, because the mean of its divisors is an integer number (1341172440).

Almost surely, 2^13112512138 is an apocalyptic number.

13112512138 is a deficient number, since it is larger than the sum of its proper divisors (8346246902).

13112512138 is a wasteful number, since it uses less digits than its factorization.

13112512138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53373.

The product of its digits is 1440, while the sum is 28.

The spelling of 13112512138 in words is "thirteen billion, one hundred twelve million, five hundred twelve thousand, one hundred thirty-eight".