400743478032 has 20 divisors (see below), whose sum is σ = 1035253985040. Its totient is φ = 133581159328.

The previous prime is 400743478021. The next prime is 400743478049. The reversal of 400743478032 is 230874347004.

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 3 ways as a sum of consecutive naturals, for example, 4174411182 + ... + 4174411277.

It is an arithmetic number, because the mean of its divisors is an integer number (51762699252).

Almost surely, 2^400743478032 is an apocalyptic number.

It is an amenable number.

400743478032 is an abundant number, since it is smaller than the sum of its proper divisors (634510507008).

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

400743478032 is a wasteful number, since it uses less digits than its factorization.

400743478032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348822470 (or 8348822464 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 400743478032 in words is "four hundred billion, seven hundred forty-three million, four hundred seventy-eight thousand, thirty-two".