13280978220 has 24 divisors (see below), whose sum is σ = 37186739184. Its totient is φ = 3541594176.

The previous prime is 13280978171. The next prime is 13280978231. The reversal of 13280978220 is 2287908231.

It is a happy number.

It is a super-2 number, since 2×13280978220² (a number of 21 digits) contains 22 as substring.

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, 110674759 + ... + 110674878.

It is an arithmetic number, because the mean of its divisors is an integer number (1549447466).

Almost surely, 2^13280978220 is an apocalyptic number.

13280978220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13280978220 is an abundant number, since it is smaller than the sum of its proper divisors (23905760964).

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

13280978220 is a wasteful number, since it uses less digits than its factorization.

13280978220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221349649 (or 221349647 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 13280978220 in words is "thirteen billion, two hundred eighty million, nine hundred seventy-eight thousand, two hundred twenty".