65553354045568 has 64 divisors (see below), whose sum is σ = 133066484639640. Its totient is φ = 32158955520000.

The previous prime is 65553354045499. The next prime is 65553354045601. The reversal of 65553354045568 is 86554045335556.

It can be written as a sum of positive squares in 4 ways, for example, as 62854325637184 + 2699028408384 = 7928072^2 + 1642872^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 7337403 + ... + 13599418.

Almost surely, 2^{65553354045568} is an apocalyptic number.

It is an amenable number.

65553354045568 is an abundant number, since it is smaller than the sum of its proper divisors (67513130594072).

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

65553354045568 is a wasteful number, since it uses less digits than its factorization.

65553354045568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20937297 (or 20937285 counting only the distinct ones).

The product of its (nonzero) digits is 648000000, while the sum is 64.

The spelling of 65553354045568 in words is "sixty-five trillion, five hundred fifty-three billion, three hundred fifty-four million, forty-five thousand, five hundred sixty-eight".