13380745457 has 2 divisors, whose sum is σ = 13380745458. Its totient is φ = 13380745456.

The previous prime is 13380745451. The next prime is 13380745507. The reversal of 13380745457 is 75454708331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7361468401 + 6019277056 = 85799^2 + 77584^2 .

It is a cyclic number.

It is not a de Polignac number, because 13380745457 - 2⁶ = 13380745393 is a prime.

It is a super-2 number, since 2×13380745457² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13380745451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6690372728 + 6690372729.

It is an arithmetic number, because the mean of its divisors is an integer number (6690372729).

Almost surely, 2^13380745457 is an apocalyptic number.

It is an amenable number.

13380745457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13380745457 is an equidigital number, since it uses as much as digits as its factorization.

13380745457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 13380745457 in words is "thirteen billion, three hundred eighty million, seven hundred forty-five thousand, four hundred fifty-seven".