13979720391841 has 8 divisors (see below), whose sum is σ = 13981995353664. Its totient is φ = 13977445613040.

The previous prime is 13979720391821. The next prime is 13979720391851. The reversal of 13979720391841 is 14819302797931.

It is a happy number.

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 13979720391841 - 2⁵ = 13979720391809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13979720391821) 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, 256749966 + ... + 256804408.

It is an arithmetic number, because the mean of its divisors is an integer number (1747749419208).

Almost surely, 2^{13979720391841} is an apocalyptic number.

It is an amenable number.

13979720391841 is a deficient number, since it is larger than the sum of its proper divisors (2274961823).

13979720391841 is an equidigital number, since it uses as much as digits as its factorization.

13979720391841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91511.

The product of its (nonzero) digits is 20575296, while the sum is 64.

The spelling of 13979720391841 in words is "thirteen trillion, nine hundred seventy-nine billion, seven hundred twenty million, three hundred ninety-one thousand, eight hundred forty-one".