31454743664 has 20 divisors (see below), whose sum is σ = 60946321656. Its totient is φ = 15726660672.

The previous prime is 31454743651. The next prime is 31454743679. The reversal of 31454743664 is 46634745413.

It is a Smith number, since the sum of its digits (47) 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 3 ways as a sum of consecutive naturals, for example, 637547 + ... + 685109.

Almost surely, 2^31454743664 is an apocalyptic number.

It is an amenable number.

31454743664 is a deficient number, since it is larger than the sum of its proper divisors (29491577992).

31454743664 is a wasteful number, since it uses less digits than its factorization.

31454743664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88904 (or 88898 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 47.

The spelling of 31454743664 in words is "thirty-one billion, four hundred fifty-four million, seven hundred forty-three thousand, six hundred sixty-four".