18608765257344 has 64 divisors (see below), whose sum is σ = 52337152304640. Its totient is φ = 5838044000256.

The previous prime is 18608765257343. The next prime is 18608765257447. The reversal of 18608765257344 is 44375256780681.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×18608765257344² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18608765257343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1425297184 + ... + 1425310239.

It is an arithmetic number, because the mean of its divisors is an integer number (817768004760).

Almost surely, 2^{18608765257344} is an apocalyptic number.

It is an amenable number.

18608765257344 is an abundant number, since it is smaller than the sum of its proper divisors (33728387047296).

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

18608765257344 is a wasteful number, since it uses less digits than its factorization.

18608765257344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850607457 (or 2850607445 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 66.

The spelling of 18608765257344 in words is "eighteen trillion, six hundred eight billion, seven hundred sixty-five million, two hundred fifty-seven thousand, three hundred forty-four".