13291081718 has 16 divisors (see below), whose sum is σ = 20238448320. Its totient is φ = 6544974216.

The previous prime is 13291081697. The next prime is 13291081721. The reversal of 13291081718 is 81718019231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969113 + ... + 982731.

It is an arithmetic number, because the mean of its divisors is an integer number (1264903020).

Almost surely, 2^13291081718 is an apocalyptic number.

13291081718 is a deficient number, since it is larger than the sum of its proper divisors (6947366602).

13291081718 is a wasteful number, since it uses less digits than its factorization.

13291081718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20971.

The product of its (nonzero) digits is 24192, while the sum is 41.

The spelling of 13291081718 in words is "thirteen billion, two hundred ninety-one million, eighty-one thousand, seven hundred eighteen".