30947856516 has 48 divisors (see below), whose sum is σ = 84954905280. Its totient is φ = 9709130880.

The previous prime is 30947856497. The next prime is 30947856523. The reversal of 30947856516 is 61565874903.

30947856516 is a `hidden beast` number, since 3 + 0 + 9 + 4 + 78 + 56 + 516 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 8426230 + ... + 8429901.

It is an arithmetic number, because the mean of its divisors is an integer number (1769893860).

Almost surely, 2^30947856516 is an apocalyptic number.

30947856516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30947856516 is an abundant number, since it is smaller than the sum of its proper divisors (54007048764).

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

30947856516 is a wasteful number, since it uses less digits than its factorization.

30947856516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16856161 (or 16856153 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 30947856516 in words is "thirty billion, nine hundred forty-seven million, eight hundred fifty-six thousand, five hundred sixteen".