400353904000 has 64 divisors (see below), whose sum is σ = 995379933600. Its totient is φ = 160141555200.

The previous prime is 400353903973. The next prime is 400353904007. The reversal of 400353904000 is 409353004.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 400353904000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400353904007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12495060 + ... + 12527059.

Almost surely, 2^400353904000 is an apocalyptic number.

400353904000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400353904000 is an abundant number, since it is smaller than the sum of its proper divisors (595026029600).

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

400353904000 is an equidigital number, since it uses as much as digits as its factorization.

400353904000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25022148 (or 25022126 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 400353904000 in words is "four hundred billion, three hundred fifty-three million, nine hundred four thousand".