30640756564 has 12 divisors (see below), whose sum is σ = 58495989888. Its totient is φ = 13927616600.

The previous prime is 30640756547. The next prime is 30640756571. The reversal of 30640756564 is 46565704603.

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, 348190372 + ... + 348190459.

It is an arithmetic number, because the mean of its divisors is an integer number (4874665824).

Almost surely, 2^30640756564 is an apocalyptic number.

It is an amenable number.

30640756564 is a deficient number, since it is larger than the sum of its proper divisors (27855233324).

30640756564 is a wasteful number, since it uses less digits than its factorization.

30640756564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696380846 (or 696380844 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 30640756564 in words is "thirty billion, six hundred forty million, seven hundred fifty-six thousand, five hundred sixty-four".