138955071264 has 48 divisors (see below), whose sum is σ = 364787569440. Its totient is φ = 46314483200.

The previous prime is 138955071253. The next prime is 138955071289. The reversal of 138955071264 is 462170559831.

It is a tau number, because it is divible by the number of its divisors (48).

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, 1237492 + ... + 1345100.

It is an arithmetic number, because the mean of its divisors is an integer number (7599741030).

It is a 1-persistent number, because it is pandigital, but 2⋅138955071264 = 277910142528 is not.

Almost surely, 2^138955071264 is an apocalyptic number.

It is an amenable number.

138955071264 is an abundant number, since it is smaller than the sum of its proper divisors (225832498176).

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

138955071264 is a wasteful number, since it uses less digits than its factorization.

138955071264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121073 (or 121065 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 138955071264 in words is "one hundred thirty-eight billion, nine hundred fifty-five million, seventy-one thousand, two hundred sixty-four".