18164355680 has 48 divisors (see below), whose sum is σ = 45171892080. Its totient is φ = 6883333632.

The previous prime is 18164355659. The next prime is 18164355751. The reversal of 18164355680 is 8655346181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2984519 + ... + 2990598.

It is an arithmetic number, because the mean of its divisors is an integer number (941081085).

Almost surely, 2^18164355680 is an apocalyptic number.

18164355680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18164355680 is an abundant number, since it is smaller than the sum of its proper divisors (27007536400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18164355680 is a wasteful number, since it uses less digits than its factorization.

18164355680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975151 (or 5975143 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 18164355680 in words is "eighteen billion, one hundred sixty-four million, three hundred fifty-five thousand, six hundred eighty".