13456642457 has 8 divisors (see below), whose sum is σ = 13481016192. Its totient is φ = 13432291600.

The previous prime is 13456642447. The next prime is 13456642469. The reversal of 13456642457 is 75424665431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13456642457 - 2¹⁶ = 13456576921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13456642447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514207 + ... + 1523067.

It is an arithmetic number, because the mean of its divisors is an integer number (1685127024).

Almost surely, 2^13456642457 is an apocalyptic number.

It is an amenable number.

13456642457 is a deficient number, since it is larger than the sum of its proper divisors (24373735).

13456642457 is an equidigital number, since it uses as much as digits as its factorization.

13456642457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11439.

The product of its digits is 2419200, while the sum is 47.

The spelling of 13456642457 in words is "thirteen billion, four hundred fifty-six million, six hundred forty-two thousand, four hundred fifty-seven".