30999512016 has 120 divisors (see below), whose sum is σ = 99623727840. Its totient is φ = 8899372800.

The previous prime is 30999511999. The next prime is 30999512059. The reversal of 30999512016 is 61021599903.

It is a happy number.

30999512016 is a `hidden beast` number, since 30 + 9 + 99 + 512 + 0 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484915 + ... + 545106.

It is an arithmetic number, because the mean of its divisors is an integer number (830197732).

Almost surely, 2^30999512016 is an apocalyptic number.

30999512016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30999512016 is an abundant number, since it is smaller than the sum of its proper divisors (68624215824).

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

30999512016 is a wasteful number, since it uses less digits than its factorization.

30999512016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030065 (or 1030056 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The spelling of 30999512016 in words is "thirty billion, nine hundred ninety-nine million, five hundred twelve thousand, sixteen".