138556591296 has 112 divisors (see below), whose sum is σ = 377713512288. Its totient is φ = 44798156800.

The previous prime is 138556591273. The next prime is 138556591309. The reversal of 138556591296 is 692195655831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310986 + ... + 1412726.

It is an arithmetic number, because the mean of its divisors is an integer number (3372442074).

Almost surely, 2^138556591296 is an apocalyptic number.

138556591296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138556591296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188856756144).

138556591296 is an abundant number, since it is smaller than the sum of its proper divisors (239156920992).

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

138556591296 is a wasteful number, since it uses less digits than its factorization.

138556591296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101970 (or 101960 counting only the distinct ones).

The product of its digits is 17496000, while the sum is 60.

The spelling of 138556591296 in words is "one hundred thirty-eight billion, five hundred fifty-six million, five hundred ninety-one thousand, two hundred ninety-six".