30117256137 has 20 divisors (see below), whose sum is σ = 46946064000. Its totient is φ = 19205205624.

The previous prime is 30117256133. The next prime is 30117256199. The reversal of 30117256137 is 73165271103.

30117256137 is a `hidden beast` number, since 3 + 0 + 1 + 17 + 25 + 613 + 7 = 666.

It is not a de Polignac number, because 30117256137 - 2² = 30117256133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30117256133) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8081137 + ... + 8084862.

It is an arithmetic number, because the mean of its divisors is an integer number (2347303200).

Almost surely, 2^30117256137 is an apocalyptic number.

It is an amenable number.

30117256137 is a deficient number, since it is larger than the sum of its proper divisors (16828807863).

30117256137 is a wasteful number, since it uses less digits than its factorization.

30117256137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16166034 (or 16166025 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The spelling of 30117256137 in words is "thirty billion, one hundred seventeen million, two hundred fifty-six thousand, one hundred thirty-seven".