18768764488528 has 10 divisors (see below), whose sum is σ = 36364481196554. Its totient is φ = 9384382244256.

The previous prime is 18768764488493. The next prime is 18768764488571. The reversal of 18768764488528 is 82588446786781.

It can be written as a sum of positive squares in only one way, i.e., 14630257802304 + 4138506686224 = 3824952^2 + 2034332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586523890251 + ... + 586523890282.

Almost surely, 2^{18768764488528} is an apocalyptic number.

It is an amenable number.

18768764488528 is a deficient number, since it is larger than the sum of its proper divisors (17595716708026).

18768764488528 is a wasteful number, since it uses less digits than its factorization.

18768764488528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173047780541 (or 1173047780535 counting only the distinct ones).

The product of its digits is 9248440320, while the sum is 82.

The spelling of 18768764488528 in words is "eighteen trillion, seven hundred sixty-eight billion, seven hundred sixty-four million, four hundred eighty-eight thousand, five hundred twenty-eight".