13387505138 has 16 divisors (see below), whose sum is σ = 22951931904. Its totient is φ = 5737021440.

The previous prime is 13387505137. The next prime is 13387505191. The reversal of 13387505138 is 83150578331.

It is not an unprimeable number, because it can be changed into a prime (13387505137) 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, 171506 + ... + 237042.

It is an arithmetic number, because the mean of its divisors is an integer number (1434495744).

Almost surely, 2^13387505138 is an apocalyptic number.

13387505138 is a deficient number, since it is larger than the sum of its proper divisors (9564426766).

13387505138 is a wasteful number, since it uses less digits than its factorization.

13387505138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80137.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 13387505138 in words is "thirteen billion, three hundred eighty-seven million, five hundred five thousand, one hundred thirty-eight".