400042864688 has 20 divisors (see below), whose sum is σ = 775100970720. Its totient is φ = 200016807744.

The previous prime is 400042864679. The next prime is 400042864691. The reversal of 400042864688 is 886468240004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487898 + ... + 1018886.

It is an arithmetic number, because the mean of its divisors is an integer number (38755048536).

Almost surely, 2^400042864688 is an apocalyptic number.

It is an amenable number.

400042864688 is a deficient number, since it is larger than the sum of its proper divisors (375058106032).

400042864688 is a wasteful number, since it uses less digits than its factorization.

400042864688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578084 (or 578078 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 50.

The spelling of 400042864688 in words is "four hundred billion, forty-two million, eight hundred sixty-four thousand, six hundred eighty-eight".