21552401045313 has 24 divisors (see below), whose sum is σ = 32265957924200. Its totient is φ = 13851679497984.

The previous prime is 21552401045297. The next prime is 21552401045317. The reversal of 21552401045313 is 31354010425512.

21552401045313 is a `hidden beast` number, since 2 + 1 + 55 + 240 + 10 + 45 + 313 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9971018766864 + 11581382278449 = 3157692^2 + 3403143^2 .

It is not a de Polignac number, because 21552401045313 - 2⁴ = 21552401045297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21552401045317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296853268 + ... + 296925861.

Almost surely, 2^{21552401045313} is an apocalyptic number.

It is an amenable number.

21552401045313 is a deficient number, since it is larger than the sum of its proper divisors (10713556878887).

21552401045313 is a wasteful number, since it uses less digits than its factorization.

21552401045313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593779281 (or 593779278 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 21552401045313 in words is "twenty-one trillion, five hundred fifty-two billion, four hundred one million, forty-five thousand, three hundred thirteen".