30906426057 has 64 divisors (see below), whose sum is σ = 47882956800. Its totient is φ = 17573137920.

The previous prime is 30906426017. The next prime is 30906426073. The reversal of 30906426057 is 75062460903.

It is not a de Polignac number, because 30906426057 - 2⁷ = 30906425929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30906426017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4855557 + ... + 4861917.

It is an arithmetic number, because the mean of its divisors is an integer number (748171200).

Almost surely, 2^30906426057 is an apocalyptic number.

It is an amenable number.

30906426057 is a deficient number, since it is larger than the sum of its proper divisors (16976530743).

30906426057 is a wasteful number, since it uses less digits than its factorization.

30906426057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6558.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 30906426057 in words is "thirty billion, nine hundred six million, four hundred twenty-six thousand, fifty-seven".