400437415064 has 8 divisors (see below), whose sum is σ = 750820153260. Its totient is φ = 200218707528.

The previous prime is 400437415057. The next prime is 400437415097. The reversal of 400437415064 is 460514734004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25027338434 + ... + 25027338449.

Almost surely, 2^400437415064 is an apocalyptic number.

It is an amenable number.

400437415064 is a deficient number, since it is larger than the sum of its proper divisors (350382738196).

400437415064 is a wasteful number, since it uses less digits than its factorization.

400437415064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50054676889 (or 50054676885 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 400437415064 in words is "four hundred billion, four hundred thirty-seven million, four hundred fifteen thousand, sixty-four".