13036604521 has 2 divisors, whose sum is σ = 13036604522. Its totient is φ = 13036604520.

The previous prime is 13036604519. The next prime is 13036604533. The reversal of 13036604521 is 12540663031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11910666496 + 1125938025 = 109136^2 + 33555^2 .

It is a cyclic number.

It is not a de Polignac number, because 13036604521 - 2¹ = 13036604519 is a prime.

Together with 13036604519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13036604551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6518302260 + 6518302261.

It is an arithmetic number, because the mean of its divisors is an integer number (6518302261).

Almost surely, 2^13036604521 is an apocalyptic number.

It is an amenable number.

13036604521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13036604521 is an equidigital number, since it uses as much as digits as its factorization.

13036604521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 13036604521 in words is "thirteen billion, thirty-six million, six hundred four thousand, five hundred twenty-one".