400623584788 has 48 divisors (see below), whose sum is σ = 836480937600. Its totient is φ = 164254366080.

The previous prime is 400623584731. The next prime is 400623584807. The reversal of 400623584788 is 887485326004.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2174698 + ... + 2351713.

It is an arithmetic number, because the mean of its divisors is an integer number (17426686200).

Almost surely, 2^400623584788 is an apocalyptic number.

It is an amenable number.

400623584788 is an abundant number, since it is smaller than the sum of its proper divisors (435857352812).

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

400623584788 is a wasteful number, since it uses less digits than its factorization.

400623584788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526560 (or 4526558 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 400623584788 in words is "four hundred billion, six hundred twenty-three million, five hundred eighty-four thousand, seven hundred eighty-eight".