138791595072 has 56 divisors (see below), whose sum is σ = 395467084096. Its totient is φ = 42705105408.

The previous prime is 138791595053. The next prime is 138791595091. The reversal of 138791595072 is 270595197831.

It is an interprime number because it is at equal distance from previous prime (138791595053) and next prime (138791595091).

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, 27800308 + ... + 27805299.

It is an arithmetic number, because the mean of its divisors is an integer number (7061912216).

Almost surely, 2^138791595072 is an apocalyptic number.

138791595072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138791595072 is an abundant number, since it is smaller than the sum of its proper divisors (256675489024).

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

138791595072 is a wasteful number, since it uses less digits than its factorization.

138791595072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55605635 (or 55605625 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 57.

The spelling of 138791595072 in words is "one hundred thirty-eight billion, seven hundred ninety-one million, five hundred ninety-five thousand, seventy-two".