13007920491 has 12 divisors (see below), whose sum is σ = 19485115832. Its totient is φ = 8671946832.

The previous prime is 13007920451. The next prime is 13007920547. The reversal of 13007920491 is 19402970031.

It is not a de Polignac number, because 13007920491 - 2⁹ = 13007919979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13007920421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26765026 + ... + 26765511.

Almost surely, 2^13007920491 is an apocalyptic number.

13007920491 is a deficient number, since it is larger than the sum of its proper divisors (6477195341).

13007920491 is an frugal number, since it uses more digits than its factorization.

13007920491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53530552 (or 53530540 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 13007920491 in words is "thirteen billion, seven million, nine hundred twenty thousand, four hundred ninety-one".