11816568759 has 4 divisors (see below), whose sum is σ = 15755425016. Its totient is φ = 7877712504.

The previous prime is 11816568739. The next prime is 11816568971. The reversal of 11816568759 is 95786561811.

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: 95786561811 = 3 ⋅31928853937.

It is not a de Polignac number, because 11816568759 - 2⁵ = 11816568727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11816568699 and 11816568708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11816568719) 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, 1969428124 + ... + 1969428129.

It is an arithmetic number, because the mean of its divisors is an integer number (3938856254).

Almost surely, 2^11816568759 is an apocalyptic number.

11816568759 is a deficient number, since it is larger than the sum of its proper divisors (3938856257).

11816568759 is an equidigital number, since it uses as much as digits as its factorization.

11816568759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938856256.

The product of its digits is 3628800, while the sum is 57.

The spelling of 11816568759 in words is "eleven billion, eight hundred sixteen million, five hundred sixty-eight thousand, seven hundred fifty-nine".