139910793815538 has 48 divisors (see below), whose sum is σ = 303413463662400. Its totient is φ = 46594876117920.

The previous prime is 139910793815531. The next prime is 139910793815603. The reversal of 139910793815538 is 835518397019931.

139910793815538 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 1 + 0 + 7 + 9 + 3 + 81 + 5 + 538 = 666.

It is not an unprimeable number, because it can be changed into a prime (139910793815531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213398008 + ... + 214052636.

It is an arithmetic number, because the mean of its divisors is an integer number (6321113826300).

Almost surely, 2^{139910793815538} is an apocalyptic number.

139910793815538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

139910793815538 is an abundant number, since it is smaller than the sum of its proper divisors (163502669846862).

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

139910793815538 is a wasteful number, since it uses less digits than its factorization.

139910793815538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665327 (or 665324 counting only the distinct ones).

The product of its (nonzero) digits is 220449600, while the sum is 72.

The spelling of 139910793815538 in words is "one hundred thirty-nine trillion, nine hundred ten billion, seven hundred ninety-three million, eight hundred fifteen thousand, five hundred thirty-eight".