18217617016 has 32 divisors (see below), whose sum is σ = 35011152000. Its totient is φ = 8882022240.

The previous prime is 18217617007. The next prime is 18217617017. The reversal of 18217617016 is 61071671281.

It is a self number, because there is not a number n which added to its sum of digits gives 18217617016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18217617017) 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 7 ways as a sum of consecutive naturals, for example, 161851 + ... + 250261.

It is an arithmetic number, because the mean of its divisors is an integer number (1094098500).

Almost surely, 2^18217617016 is an apocalyptic number.

It is an amenable number.

18217617016 is a deficient number, since it is larger than the sum of its proper divisors (16793534984).

18217617016 is a wasteful number, since it uses less digits than its factorization.

18217617016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89059 (or 89055 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 18217617016 in words is "eighteen billion, two hundred seventeen million, six hundred seventeen thousand, sixteen".