11688940177 has 4 divisors (see below), whose sum is σ = 11690546740. Its totient is φ = 11687333616.

The previous prime is 11688940169. The next prime is 11688940183. The reversal of 11688940177 is 77104988611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77104988611 = 7 ⋅11014998373.

It can be written as a sum of positive squares in 2 ways, for example, as 6400160001 + 5288780176 = 80001^2 + 72724^2 .

It is a cyclic number.

It is not a de Polignac number, because 11688940177 - 2³ = 11688940169 is a prime.

It is a super-2 number, since 2×11688940177² (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 (11688940577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792318 + ... + 806935.

It is an arithmetic number, because the mean of its divisors is an integer number (2922636685).

Almost surely, 2^11688940177 is an apocalyptic number.

It is an amenable number.

11688940177 is a deficient number, since it is larger than the sum of its proper divisors (1606563).

11688940177 is an equidigital number, since it uses as much as digits as its factorization.

11688940177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606562.

The product of its (nonzero) digits is 677376, while the sum is 52.

The spelling of 11688940177 in words is "eleven billion, six hundred eighty-eight million, nine hundred forty thousand, one hundred seventy-seven".