13226606364865 has 8 divisors (see below), whose sum is σ = 15872164297128. Its totient is φ = 10581127319040.

The previous prime is 13226606364859. The next prime is 13226606364869. The reversal of 13226606364865 is 56846360662231.

It can be written as a sum of positive squares in 4 ways, for example, as 9617943840961 + 3608662523904 = 3101281^2 + 1899648^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13226606364865 - 2²⁵ = 13226572810433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13226606364869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19352112 + ... + 20023921.

It is an arithmetic number, because the mean of its divisors is an integer number (1984020537141).

Almost surely, 2^{13226606364865} is an apocalyptic number.

It is an amenable number.

13226606364865 is a deficient number, since it is larger than the sum of its proper divisors (2645557932263).

13226606364865 is an equidigital number, since it uses as much as digits as its factorization.

13226606364865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39443219.

The product of its (nonzero) digits is 44789760, while the sum is 58.

The spelling of 13226606364865 in words is "thirteen trillion, two hundred twenty-six billion, six hundred six million, three hundred sixty-four thousand, eight hundred sixty-five".