13323139561 has 16 divisors (see below), whose sum is σ = 13831300800. Its totient is φ = 12823133760.

The previous prime is 13323139537. The next prime is 13323139579. The reversal of 13323139561 is 16593132331.

It is a cyclic number.

It is not a de Polignac number, because 13323139561 - 2²⁵ = 13289585129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13323139561.

It is not an unprimeable number, because it can be changed into a prime (13323139591) 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, 3248290 + ... + 3252388.

It is an arithmetic number, because the mean of its divisors is an integer number (864456300).

Almost surely, 2^13323139561 is an apocalyptic number.

It is an amenable number.

13323139561 is a deficient number, since it is larger than the sum of its proper divisors (508161239).

13323139561 is a wasteful number, since it uses less digits than its factorization.

13323139561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064.

The product of its digits is 43740, while the sum is 37.

The spelling of 13323139561 in words is "thirteen billion, three hundred twenty-three million, one hundred thirty-nine thousand, five hundred sixty-one".