13265050321 has 2 divisors, whose sum is σ = 13265050322. Its totient is φ = 13265050320.

The previous prime is 13265050273. The next prime is 13265050327. The reversal of 13265050321 is 12305056231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7930793025 + 5334257296 = 89055^2 + 73036^2 .

It is a cyclic number.

It is not a de Polignac number, because 13265050321 - 2⁷ = 13265050193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13265050321.

It is not a weakly prime, because it can be changed into another prime (13265050327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6632525160 + 6632525161.

It is an arithmetic number, because the mean of its divisors is an integer number (6632525161).

Almost surely, 2^13265050321 is an apocalyptic number.

It is an amenable number.

13265050321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13265050321 is an equidigital number, since it uses as much as digits as its factorization.

13265050321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 13265050321 in words is "thirteen billion, two hundred sixty-five million, fifty thousand, three hundred twenty-one".