13345122320 has 40 divisors (see below), whose sum is σ = 31033221336. Its totient is φ = 5337049088.

The previous prime is 13345122319. The next prime is 13345122347. The reversal of 13345122320 is 2322154331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33500944 + 13311621376 = 5788^2 + 115376^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 13345122320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534434 + ... + 558846.

Almost surely, 2^13345122320 is an apocalyptic number.

13345122320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13345122320 is an abundant number, since it is smaller than the sum of its proper divisors (17688099016).

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

13345122320 is a wasteful number, since it uses less digits than its factorization.

13345122320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31259 (or 31253 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 13345122320 its reverse (2322154331), we get a palindrome (15667276651).

The spelling of 13345122320 in words is "thirteen billion, three hundred forty-five million, one hundred twenty-two thousand, three hundred twenty".