138195818504 has 32 divisors (see below), whose sum is σ = 271574320320. Its totient is φ = 65802470976.

The previous prime is 138195818471. The next prime is 138195818513. The reversal of 138195818504 is 405818591831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612559 + ... + 1696094.

It is an arithmetic number, because the mean of its divisors is an integer number (8486697510).

Almost surely, 2^138195818504 is an apocalyptic number.

It is an amenable number.

138195818504 is a deficient number, since it is larger than the sum of its proper divisors (133378501816).

138195818504 is a wasteful number, since it uses less digits than its factorization.

138195818504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308909 (or 3308905 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 53.

The spelling of 138195818504 in words is "one hundred thirty-eight billion, one hundred ninety-five million, eight hundred eighteen thousand, five hundred four".