31400763664 has 20 divisors (see below), whose sum is σ = 61157514240. Its totient is φ = 15618179360.

The previous prime is 31400763613. The next prime is 31400763673. The reversal of 31400763664 is 46636700413.

It is a happy number.

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, 5134504 + ... + 5140615.

It is an arithmetic number, because the mean of its divisors is an integer number (3057875712).

Almost surely, 2^31400763664 is an apocalyptic number.

It is an amenable number.

31400763664 is a deficient number, since it is larger than the sum of its proper divisors (29756750576).

31400763664 is a wasteful number, since it uses less digits than its factorization.

31400763664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10275318 (or 10275312 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 31400763664 in words is "thirty-one billion, four hundred million, seven hundred sixty-three thousand, six hundred sixty-four".