13268764457 has 4 divisors (see below), whose sum is σ = 14289438660. Its totient is φ = 12248090256.

The previous prime is 13268764451. The next prime is 13268764459. The reversal of 13268764457 is 75446786231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75446786231 = 53617 ⋅1407143.

It can be written as a sum of positive squares in 2 ways, for example, as 7071296281 + 6197468176 = 84091^2 + 78724^2 .

It is a cyclic number.

It is not a de Polignac number, because 13268764457 - 2³⁰ = 12195022633 is a prime.

It is a super-2 number, since 2×13268764457² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13268764399 and 13268764408.

It is not an unprimeable number, because it can be changed into a prime (13268764451) 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, 510337082 + ... + 510337107.

It is an arithmetic number, because the mean of its divisors is an integer number (3572359665).

Almost surely, 2^13268764457 is an apocalyptic number.

It is an amenable number.

13268764457 is a deficient number, since it is larger than the sum of its proper divisors (1020674203).

13268764457 is a wasteful number, since it uses less digits than its factorization.

13268764457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020674202.

The product of its digits is 6773760, while the sum is 53.

The spelling of 13268764457 in words is "thirteen billion, two hundred sixty-eight million, seven hundred sixty-four thousand, four hundred fifty-seven".