13421322320 has 80 divisors (see below), whose sum is σ = 35680037760. Its totient is φ = 4599316992.

The previous prime is 13421322289. The next prime is 13421322323. The reversal of 13421322320 is 2322312431.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421322323) 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, 1439594 + ... + 1448886.

It is an arithmetic number, because the mean of its divisors is an integer number (446000472).

Almost surely, 2^13421322320 is an apocalyptic number.

13421322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13421322320 is an abundant number, since it is smaller than the sum of its proper divisors (22258715440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13421322320 is a wasteful number, since it uses less digits than its factorization.

13421322320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892 (or 11886 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13421322320 its reverse (2322312431), we get a palindrome (15743634751).

The spelling of 13421322320 in words is "thirteen billion, four hundred twenty-one million, three hundred twenty-two thousand, three hundred twenty".