30858656664 has 32 divisors (see below), whose sum is σ = 84159973440. Its totient is φ = 9351108000.

The previous prime is 30858656597. The next prime is 30858656677. The reversal of 30858656664 is 46665685803.

It is a super-2 number, since 2×30858656664² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58444162 + ... + 58444689.

It is an arithmetic number, because the mean of its divisors is an integer number (2629999170).

Almost surely, 2^30858656664 is an apocalyptic number.

It is an amenable number.

30858656664 is an abundant number, since it is smaller than the sum of its proper divisors (53301316776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30858656664 is a wasteful number, since it uses less digits than its factorization.

30858656664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116888871 (or 116888867 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 57.

The spelling of 30858656664 in words is "thirty billion, eight hundred fifty-eight million, six hundred fifty-six thousand, six hundred sixty-four".