13636111321 has 16 divisors (see below), whose sum is σ = 15990226560. Its totient is φ = 11384449920.

The previous prime is 13636111309. The next prime is 13636111327. The reversal of 13636111321 is 12311163631.

It is not a de Polignac number, because 13636111321 - 2⁷ = 13636111193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13636111321.

It is not an unprimeable number, because it can be changed into a prime (13636111327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139275 + ... + 216031.

It is an arithmetic number, because the mean of its divisors is an integer number (999389160).

Almost surely, 2^13636111321 is an apocalyptic number.

It is an amenable number.

13636111321 is a deficient number, since it is larger than the sum of its proper divisors (2354115239).

13636111321 is an equidigital number, since it uses as much as digits as its factorization.

13636111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77424.

The product of its digits is 1944, while the sum is 28.

Adding to 13636111321 its reverse (12311163631), we get a palindrome (25947274952).

The spelling of 13636111321 in words is "thirteen billion, six hundred thirty-six million, one hundred eleven thousand, three hundred twenty-one".