156431012644504 has 128 divisors (see below), whose sum is σ = 347090241254400. Its totient is φ = 65398930122240.

The previous prime is 156431012644493. The next prime is 156431012644591. The reversal of 156431012644504 is 405446210134651.

156431012644504 is digitally balanced in base 2, 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 (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113068774 + ... + 114443914.

It is an arithmetic number, because the mean of its divisors is an integer number (2711642509800).

Almost surely, 2^{156431012644504} 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 156431012644504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173545120627200).

156431012644504 is an abundant number, since it is smaller than the sum of its proper divisors (190659228609896).

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

156431012644504 is a wasteful number, since it uses less digits than its factorization.

156431012644504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377705 (or 1377701 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 156431012644504 in words is "one hundred fifty-six trillion, four hundred thirty-one billion, twelve million, six hundred forty-four thousand, five hundred four".