400375560432 has 160 divisors (see below), whose sum is σ = 1092180096000. Its totient is φ = 126198051840.

The previous prime is 400375560419. The next prime is 400375560433. The reversal of 400375560432 is 234065573004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400375560433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22247694 + ... + 22265682.

It is an arithmetic number, because the mean of its divisors is an integer number (6826125600).

Almost surely, 2^400375560432 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 400375560432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546090048000).

400375560432 is an abundant number, since it is smaller than the sum of its proper divisors (691804535568).

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

400375560432 is a wasteful number, since it uses less digits than its factorization.

400375560432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18359 (or 18353 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 39.

The spelling of 400375560432 in words is "four hundred billion, three hundred seventy-five million, five hundred sixty thousand, four hundred thirty-two".