18764128088640 has 168 divisors, whose sum is σ = 70408126196928. Its totient is φ = 4548879528960.

The previous prime is 18764128088627. The next prime is 18764128088669. The reversal of 18764128088640 is 4688082146781.

18764128088640 is a `hidden beast` number, since 1 + 8 + 7 + 6 + 412 + 80 + 88 + 64 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296119332 + ... + 296182691.

Almost surely, 2^{18764128088640} is an apocalyptic number.

18764128088640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18764128088640 is an abundant number, since it is smaller than the sum of its proper divisors (51643998108288).

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

18764128088640 is a wasteful number, since it uses less digits than its factorization.

18764128088640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592302057 (or 592302044 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 63.

The spelling of 18764128088640 in words is "eighteen trillion, seven hundred sixty-four billion, one hundred twenty-eight million, eighty-eight thousand, six hundred forty".