13359794621 has 2 divisors, whose sum is σ = 13359794622. Its totient is φ = 13359794620.

The previous prime is 13359794579. The next prime is 13359794687. The reversal of 13359794621 is 12649795331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11935562500 + 1424232121 = 109250^2 + 37739^2 .

It is a cyclic number.

It is not a de Polignac number, because 13359794621 - 2¹⁸ = 13359532477 is a prime.

It is a super-2 number, since 2×13359794621² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13359794621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13359794221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6679897310 + 6679897311.

It is an arithmetic number, because the mean of its divisors is an integer number (6679897311).

Almost surely, 2^13359794621 is an apocalyptic number.

It is an amenable number.

13359794621 is a deficient number, since it is larger than the sum of its proper divisors (1).

13359794621 is an equidigital number, since it uses as much as digits as its factorization.

13359794621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The spelling of 13359794621 in words is "thirteen billion, three hundred fifty-nine million, seven hundred ninety-four thousand, six hundred twenty-one".