13312398457 has 4 divisors (see below), whose sum is σ = 13315800996. Its totient is φ = 13308995920.

The previous prime is 13312398443. The next prime is 13312398511. The reversal of 13312398457 is 75489321331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4601722896 + 8710675561 = 67836^2 + 93331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13312398457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13312398157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695394 + ... + 1703227.

It is an arithmetic number, because the mean of its divisors is an integer number (3328950249).

Almost surely, 2^13312398457 is an apocalyptic number.

It is an amenable number.

13312398457 is a deficient number, since it is larger than the sum of its proper divisors (3402539).

13312398457 is an equidigital number, since it uses as much as digits as its factorization.

13312398457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402538.

The product of its digits is 544320, while the sum is 46.

The spelling of 13312398457 in words is "thirteen billion, three hundred twelve million, three hundred ninety-eight thousand, four hundred fifty-seven".