18113711517 has 48 divisors (see below), whose sum is σ = 28817845056. Its totient is φ = 10872576000.

The previous prime is 18113711509. The next prime is 18113711537. The reversal of 18113711517 is 71511731181.

18113711517 is a `hidden beast` number, since 1 + 8 + 1 + 137 + 1 + 1 + 517 = 666.

It is not a de Polignac number, because 18113711517 - 2³ = 18113711509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18113711537) 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 47 ways as a sum of consecutive naturals, for example, 8571453 + ... + 8573565.

It is an arithmetic number, because the mean of its divisors is an integer number (600371772).

Almost surely, 2^18113711517 is an apocalyptic number.

It is an amenable number.

18113711517 is a deficient number, since it is larger than the sum of its proper divisors (10704133539).

18113711517 is a wasteful number, since it uses less digits than its factorization.

18113711517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922 (or 2919 counting only the distinct ones).

The product of its digits is 5880, while the sum is 36.

The spelling of 18113711517 in words is "eighteen billion, one hundred thirteen million, seven hundred eleven thousand, five hundred seventeen".