13776531842 has 16 divisors (see below), whose sum is σ = 21993754392. Its totient is φ = 6449479680.

The previous prime is 13776531833. The next prime is 13776531871. The reversal of 13776531842 is 24813567731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10890800881 + 2885730961 = 104359^2 + 53719^2 .

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, 1043159 + ... + 1056282.

Almost surely, 2^13776531842 is an apocalyptic number.

13776531842 is a deficient number, since it is larger than the sum of its proper divisors (8217222550).

13776531842 is a wasteful number, since it uses less digits than its factorization.

13776531842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099653.

The product of its digits is 846720, while the sum is 47.

The spelling of 13776531842 in words is "thirteen billion, seven hundred seventy-six million, five hundred thirty-one thousand, eight hundred forty-two".