13045502621 has 2 divisors, whose sum is σ = 13045502622. Its totient is φ = 13045502620.

The previous prime is 13045502599. The next prime is 13045502683. The reversal of 13045502621 is 12620554031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6834328900 + 6211173721 = 82670^2 + 78811^2 .

It is a cyclic number.

It is not a de Polignac number, because 13045502621 - 2⁶ = 13045502557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13045504621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6522751310 + 6522751311.

It is an arithmetic number, because the mean of its divisors is an integer number (6522751311).

Almost surely, 2^13045502621 is an apocalyptic number.

It is an amenable number.

13045502621 is a deficient number, since it is larger than the sum of its proper divisors (1).

13045502621 is an equidigital number, since it uses as much as digits as its factorization.

13045502621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 13045502621 in words is "thirteen billion, forty-five million, five hundred two thousand, six hundred twenty-one".