11688204771 has 8 divisors (see below), whose sum is σ = 17315858960. Its totient is φ = 7792136496.

The previous prime is 11688204757. The next prime is 11688204809. The reversal of 11688204771 is 17740288611.

It is not a de Polignac number, because 11688204771 - 2⁷ = 11688204643 is a prime.

It is a super-2 number, since 2×11688204771² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11688203771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216448210 + ... + 216448263.

It is an arithmetic number, because the mean of its divisors is an integer number (2164482370).

Almost surely, 2^11688204771 is an apocalyptic number.

11688204771 is a deficient number, since it is larger than the sum of its proper divisors (5627654189).

11688204771 is an equidigital number, since it uses as much as digits as its factorization.

11688204771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432896482 (or 432896476 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 11688204771 in words is "eleven billion, six hundred eighty-eight million, two hundred four thousand, seven hundred seventy-one".