400985886720 has 104 divisors (see below), whose sum is σ = 1282998398976. Its totient is φ = 106929553408.

The previous prime is 400985886703. The next prime is 400985886761. The reversal of 400985886720 is 27688589004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3201792 + ... + 3324671.

Almost surely, 2^400985886720 is an apocalyptic number.

400985886720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400985886720 is an abundant number, since it is smaller than the sum of its proper divisors (882012512256).

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

400985886720 is an equidigital number, since it uses as much as digits as its factorization.

400985886720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6526495 (or 6526473 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 400985886720 in words is "four hundred billion, nine hundred eighty-five million, eight hundred eighty-six thousand, seven hundred twenty".