30993957644 has 48 divisors (see below), whose sum is σ = 59455149600. Its totient is φ = 14049801216.

The previous prime is 30993957637. The next prime is 30993957679. The reversal of 30993957644 is 44675939903.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3975302 + ... + 3983090.

It is an arithmetic number, because the mean of its divisors is an integer number (1238648950).

Almost surely, 2^30993957644 is an apocalyptic number.

It is an amenable number.

30993957644 is a deficient number, since it is larger than the sum of its proper divisors (28461191956).

30993957644 is a wasteful number, since it uses less digits than its factorization.

30993957644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9162 (or 9160 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 59.

The spelling of 30993957644 in words is "thirty billion, nine hundred ninety-three million, nine hundred fifty-seven thousand, six hundred forty-four".