13491956279 has 8 divisors (see below), whose sum is σ = 14671698768. Its totient is φ = 12355113600.

The previous prime is 13491956213. The next prime is 13491956329. The reversal of 13491956279 is 97265919431.

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 13491956279 - 2²⁸ = 13223520823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491956209) 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, 10724297 + ... + 10725554.

It is an arithmetic number, because the mean of its divisors is an integer number (1833962346).

Almost surely, 2^13491956279 is an apocalyptic number.

13491956279 is a deficient number, since it is larger than the sum of its proper divisors (1179742489).

13491956279 is a wasteful number, since it uses less digits than its factorization.

13491956279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21449905.

The product of its digits is 3674160, while the sum is 56.

The spelling of 13491956279 in words is "thirteen billion, four hundred ninety-one million, nine hundred fifty-six thousand, two hundred seventy-nine".