156401012404 has 96 divisors (see below), whose sum is σ = 344027980800. Its totient is φ = 61820833536.

The previous prime is 156401012381. The next prime is 156401012461. The reversal of 156401012404 is 404210104651.

It is a super-2 number, since 2×156401012404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26519184 + ... + 26525080.

It is an arithmetic number, because the mean of its divisors is an integer number (3583624800).

Almost surely, 2^156401012404 is an apocalyptic number.

156401012404 is a gapful number since it is divisible by the number (14) 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 156401012404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172013990400).

156401012404 is an abundant number, since it is smaller than the sum of its proper divisors (187626968396).

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

156401012404 is a wasteful number, since it uses less digits than its factorization.

156401012404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422 (or 7406 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 156401012404 in words is "one hundred fifty-six billion, four hundred one million, twelve thousand, four hundred four".