139521432324864 has 576 divisors, whose sum is σ = 401222234649600. Its totient is φ = 42912730054656.

The previous prime is 139521432324821. The next prime is 139521432324887. The reversal of 139521432324864 is 468423234125931.

139521432324864 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24507538402 + ... + 24507544094.

It is an arithmetic number, because the mean of its divisors is an integer number (696566379600).

Almost surely, 2^{139521432324864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139521432324864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200611117324800).

139521432324864 is an abundant number, since it is smaller than the sum of its proper divisors (261700802324736).

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

139521432324864 is a wasteful number, since it uses less digits than its factorization.

139521432324864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100 (or 6086 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 57.

The spelling of 139521432324864 in words is "one hundred thirty-nine trillion, five hundred twenty-one billion, four hundred thirty-two million, three hundred twenty-four thousand, eight hundred sixty-four".