400807810008 has 112 divisors (see below), whose sum is σ = 1145855075400. Its totient is φ = 131338039680.

The previous prime is 400807810001. The next prime is 400807810009. The reversal of 400807810008 is 800018708004.

400807810008 is a `hidden beast` number, since 400 + 80 + 78 + 100 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400807810001) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 238333 + ... + 926508.

Almost surely, 2^400807810008 is an apocalyptic number.

It is an amenable number.

400807810008 is an abundant number, since it is smaller than the sum of its proper divisors (745047265392).

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

400807810008 is a wasteful number, since it uses less digits than its factorization.

400807810008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164924 (or 1164905 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 400807810008 in words is "four hundred billion, eight hundred seven million, eight hundred ten thousand, eight".