11536879817 has 2 divisors, whose sum is σ = 11536879818. Its totient is φ = 11536879816.

The previous prime is 11536879811. The next prime is 11536879841. The reversal of 11536879817 is 71897863511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8142535696 + 3394344121 = 90236^2 + 58261^2 .

It is a cyclic number.

It is not a de Polignac number, because 11536879817 - 2⁸ = 11536879561 is a prime.

It is not a weakly prime, because it can be changed into another prime (11536879811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5768439908 + 5768439909.

It is an arithmetic number, because the mean of its divisors is an integer number (5768439909).

Almost surely, 2^11536879817 is an apocalyptic number.

It is an amenable number.

11536879817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11536879817 is an equidigital number, since it uses as much as digits as its factorization.

11536879817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 56.

The spelling of 11536879817 in words is "eleven billion, five hundred thirty-six million, eight hundred seventy-nine thousand, eight hundred seventeen".