13322311645 has 16 divisors (see below), whose sum is σ = 16034376240. Its totient is φ = 10626163200.

The previous prime is 13322311637. The next prime is 13322311661. The reversal of 13322311645 is 54611322331.

It can be written as a sum of positive squares in 8 ways, for example, as 3165300121 + 10157011524 = 56261^2 + 100782^2 .

It is not a de Polignac number, because 13322311645 - 2³ = 13322311637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2997625 + ... + 3002065.

It is an arithmetic number, because the mean of its divisors is an integer number (1002148515).

Almost surely, 2^13322311645 is an apocalyptic number.

It is an amenable number.

13322311645 is a deficient number, since it is larger than the sum of its proper divisors (2712064595).

13322311645 is a wasteful number, since it uses less digits than its factorization.

13322311645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096.

The product of its digits is 12960, while the sum is 31.

Adding to 13322311645 its reverse (54611322331), we get a palindrome (67933633976).

The spelling of 13322311645 in words is "thirteen billion, three hundred twenty-two million, three hundred eleven thousand, six hundred forty-five".