18380529711504 has 45 divisors (see below), whose sum is σ = 51440098659339. Its totient is φ = 6126826088160.

The previous prime is 18380529711493. The next prime is 18380529711601. The reversal of 18380529711504 is 40511792508381.

The square root of 18380529711504 is 4287252.

It is a perfect power (a square), and thus also a powerful number.

18380529711504 is a `hidden beast` number, since 1 + 8 + 3 + 80 + 52 + 9 + 7 + 1 + 1 + 504 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51268389 + ... + 51625659.

Almost surely, 2^{18380529711504} is an apocalyptic number.

18380529711504 is the 4287252-nd square number.

It is an amenable number.

18380529711504 is an abundant number, since it is smaller than the sum of its proper divisors (33059568947835).

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

18380529711504 is an frugal number, since it uses more digits than its factorization.

18380529711504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714556 (or 357276 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 18380529711504 in words is "eighteen trillion, three hundred eighty billion, five hundred twenty-nine million, seven hundred eleven thousand, five hundred four".