13920631727 has 4 divisors (see below), whose sum is σ = 13924568760. Its totient is φ = 13916694696.

The previous prime is 13920631661. The next prime is 13920631733. The reversal of 13920631727 is 72713602931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13920631727 - 2²⁰ = 13919583151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13920631427) 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, 1963208 + ... + 1970285.

It is an arithmetic number, because the mean of its divisors is an integer number (3481142190).

Almost surely, 2^13920631727 is an apocalyptic number.

13920631727 is a deficient number, since it is larger than the sum of its proper divisors (3937033).

13920631727 is an equidigital number, since it uses as much as digits as its factorization.

13920631727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937032.

The product of its (nonzero) digits is 95256, while the sum is 41.

The spelling of 13920631727 in words is "thirteen billion, nine hundred twenty million, six hundred thirty-one thousand, seven hundred twenty-seven".