30879462991 has 16 divisors (see below), whose sum is σ = 33334326144. Its totient is φ = 28436061024.

The previous prime is 30879462931. The next prime is 30879463031. The reversal of 30879462991 is 19926497803.

It is a cyclic number.

It is not a de Polignac number, because 30879462991 - 2⁷ = 30879462863 is a prime.

It is a super-2 number, since 2×30879462991² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30879462931) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17921056 + ... + 17922778.

It is an arithmetic number, because the mean of its divisors is an integer number (2083395384).

Almost surely, 2^30879462991 is an apocalyptic number.

30879462991 is a deficient number, since it is larger than the sum of its proper divisors (2454863153).

30879462991 is a wasteful number, since it uses less digits than its factorization.

30879462991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 30879462991 in words is "thirty billion, eight hundred seventy-nine million, four hundred sixty-two thousand, nine hundred ninety-one".