13255513321 has 4 divisors (see below), whose sum is σ = 13256279632. Its totient is φ = 13254747012.

The previous prime is 13255513319. The next prime is 13255513339. The reversal of 13255513321 is 12331555231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13255513321 - 2¹ = 13255513319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13255513301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356595 + ... + 392008.

It is an arithmetic number, because the mean of its divisors is an integer number (3314069908).

Almost surely, 2^13255513321 is an apocalyptic number.

It is an amenable number.

13255513321 is a deficient number, since it is larger than the sum of its proper divisors (766311).

13255513321 is an equidigital number, since it uses as much as digits as its factorization.

13255513321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766310.

The product of its digits is 13500, while the sum is 31.

The spelling of 13255513321 in words is "thirteen billion, two hundred fifty-five million, five hundred thirteen thousand, three hundred twenty-one".