18516885017 has 16 divisors (see below), whose sum is σ = 19028338560. Its totient is φ = 18012014592.

The previous prime is 18516884989. The next prime is 18516885029. The reversal of 18516885017 is 71058861581.

It is a cyclic number.

It is not a de Polignac number, because 18516885017 - 2¹⁶ = 18516819481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18516885047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3706073 + ... + 3711065.

It is an arithmetic number, because the mean of its divisors is an integer number (1189271160).

Almost surely, 2^18516885017 is an apocalyptic number.

It is an amenable number.

18516885017 is a deficient number, since it is larger than the sum of its proper divisors (511453543).

18516885017 is a wasteful number, since it uses less digits than its factorization.

18516885017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632.

The product of its (nonzero) digits is 537600, while the sum is 50.

The spelling of 18516885017 in words is "eighteen billion, five hundred sixteen million, eight hundred eighty-five thousand, seventeen".