13220864080 has 20 divisors (see below), whose sum is σ = 30738509172. Its totient is φ = 5288345600.

The previous prime is 13220864057. The next prime is 13220864119. The reversal of 13220864080 is 8046802231.

It can be written as a sum of positive squares in 2 ways, for example, as 2944581696 + 10276282384 = 54264^2 + 101372^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82630321 + ... + 82630480.

Almost surely, 2^13220864080 is an apocalyptic number.

13220864080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220864080 is an abundant number, since it is smaller than the sum of its proper divisors (17517645092).

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

13220864080 is a wasteful number, since it uses less digits than its factorization.

13220864080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165260814 (or 165260808 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 13220864080 in words is "thirteen billion, two hundred twenty million, eight hundred sixty-four thousand, eighty".