400375315516 has 48 divisors (see below), whose sum is σ = 809944621920. Its totient is φ = 171150264320.

The previous prime is 400375315511. The next prime is 400375315537. The reversal of 400375315516 is 615513573004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400375315511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756546 + ... + 1171798.

It is an arithmetic number, because the mean of its divisors is an integer number (16873846290).

Almost surely, 2^400375315516 is an apocalyptic number.

It is an amenable number.

400375315516 is an abundant number, since it is smaller than the sum of its proper divisors (409569306404).

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

400375315516 is a wasteful number, since it uses less digits than its factorization.

400375315516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416574 (or 416572 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 400375315516 in words is "four hundred billion, three hundred seventy-five million, three hundred fifteen thousand, five hundred sixteen".