11596879681 has 4 divisors (see below), whose sum is σ = 12279049092. Its totient is φ = 10914710272.

The previous prime is 11596879673. The next prime is 11596879699. The reversal of 11596879681 is 18697869511.

11596879681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6730561600 + 4866318081 = 82040^2 + 69759^2 .

It is a cyclic number.

It is not a de Polignac number, because 11596879681 - 2³ = 11596879673 is a prime.

It is a super-2 number, since 2×11596879681² (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 (11596879081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341084680 + ... + 341084713.

It is an arithmetic number, because the mean of its divisors is an integer number (3069762273).

Almost surely, 2^11596879681 is an apocalyptic number.

It is an amenable number.

11596879681 is a deficient number, since it is larger than the sum of its proper divisors (682169411).

11596879681 is an equidigital number, since it uses as much as digits as its factorization.

11596879681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682169410.

The product of its digits is 6531840, while the sum is 61.

The spelling of 11596879681 in words is "eleven billion, five hundred ninety-six million, eight hundred seventy-nine thousand, six hundred eighty-one".