400152172780 has 12 divisors (see below), whose sum is σ = 840319562880. Its totient is φ = 160060869104.

The previous prime is 400152172757. The next prime is 400152172843. The reversal of 400152172780 is 87271251004.

It is a super-2 number, since 2×400152172780² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10003804300 + ... + 10003804339.

It is an arithmetic number, because the mean of its divisors is an integer number (70026630240).

Almost surely, 2^400152172780 is an apocalyptic number.

It is an amenable number.

400152172780 is an abundant number, since it is smaller than the sum of its proper divisors (440167390100).

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

400152172780 is a wasteful number, since it uses less digits than its factorization.

400152172780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20007608648 (or 20007608646 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 400152172780 in words is "four hundred billion, one hundred fifty-two million, one hundred seventy-two thousand, seven hundred eighty".