11811736874 has 16 divisors (see below), whose sum is σ = 20250672000. Its totient is φ = 5061677904.

The previous prime is 11811736843. The next prime is 11811736907. The reversal of 11811736874 is 47863711811.

It is a happy number.

It is a super-2 number, since 2×11811736874² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 132152 + ... + 202700.

It is an arithmetic number, because the mean of its divisors is an integer number (1265667000).

Almost surely, 2^11811736874 is an apocalyptic number.

11811736874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11811736874 is a deficient number, since it is larger than the sum of its proper divisors (8438935126).

11811736874 is a wasteful number, since it uses less digits than its factorization.

11811736874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82517.

The product of its digits is 225792, while the sum is 47.

The spelling of 11811736874 in words is "eleven billion, eight hundred eleven million, seven hundred thirty-six thousand, eight hundred seventy-four".