400431073600 has 84 divisors (see below), whose sum is σ = 989981264128. Its totient is φ = 159413184000.

The previous prime is 400431073583. The next prime is 400431073657. The reversal of 400431073600 is 6370134004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255456 + ... + 930655.

Almost surely, 2^400431073600 is an apocalyptic number.

400431073600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400431073600 is an abundant number, since it is smaller than the sum of its proper divisors (589550190528).

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

400431073600 is a wasteful number, since it uses less digits than its factorization.

400431073600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186344 (or 1186329 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The spelling of 400431073600 in words is "four hundred billion, four hundred thirty-one million, seventy-three thousand, six hundred".