13907720761 has 27 divisors (see below), whose sum is σ = 15608705637. Its totient is φ = 12382755000.

The previous prime is 13907720759. The next prime is 13907720773. The reversal of 13907720761 is 16702770931.

The square root of 13907720761 is 117931.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 13907720761 - 2¹ = 13907720759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13907720711) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 92104036 + ... + 92104186.

Almost surely, 2^13907720761 is an apocalyptic number.

13907720761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13907720761 is the 117931-st square number.

13907720761 is the 58966-th centered octagonal number.

It is an amenable number.

13907720761 is a deficient number, since it is larger than the sum of its proper divisors (1700984876).

13907720761 is an frugal number, since it uses more digits than its factorization.

13907720761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 43.

The spelling of 13907720761 in words is "thirteen billion, nine hundred seven million, seven hundred twenty thousand, seven hundred sixty-one".