11713987922 has 90 divisors (see below), whose sum is σ = 22923405513. Its totient is φ = 4474308384.

The previous prime is 11713987903. The next prime is 11713987931. The reversal of 11713987922 is 22978931711.

It can be written as a sum of positive squares in 8 ways, for example, as 1316310961 + 10397676961 = 36281^2 + 101969^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=76531.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 403930604 + ... + 403930632.

Almost surely, 2^11713987922 is an apocalyptic number.

11713987922 is a deficient number, since it is larger than the sum of its proper divisors (11209417591).

11713987922 is an frugal number, since it uses more digits than its factorization.

11713987922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 51 counting only the distinct ones).

The product of its digits is 381024, while the sum is 50.

Multiplying 11713987922 by its sum of digits (50), we get a square (585699396100 = 765310²).

The spelling of 11713987922 in words is "eleven billion, seven hundred thirteen million, nine hundred eighty-seven thousand, nine hundred twenty-two".