18517711059 has 12 divisors (see below), whose sum is σ = 26748988552. Its totient is φ = 12344594400.

The previous prime is 18517711021. The next prime is 18517711073. The reversal of 18517711059 is 95011771581.

18517711059 is a `hidden beast` number, since 1 + 8 + 517 + 71 + 10 + 59 = 666.

It is not a de Polignac number, because 18517711059 - 2¹³ = 18517702867 is a prime.

It is a super-2 number, since 2×18517711059² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18517711019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350064 + ... + 399474.

Almost surely, 2^18517711059 is an apocalyptic number.

18517711059 is a deficient number, since it is larger than the sum of its proper divisors (8231277493).

18517711059 is a wasteful number, since it uses less digits than its factorization.

18517711059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91058 (or 91055 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 45.

The spelling of 18517711059 in words is "eighteen billion, five hundred seventeen million, seven hundred eleven thousand, fifty-nine".