13209779980 has 24 divisors (see below), whose sum is σ = 28946649312. Its totient is φ = 5054176512.

The previous prime is 13209779959. The next prime is 13209779981. The reversal of 13209779980 is 8997790231.

It is not an unprimeable number, because it can be changed into a prime (13209779981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14357997 + ... + 14358916.

It is an arithmetic number, because the mean of its divisors is an integer number (1206110388).

Almost surely, 2^13209779980 is an apocalyptic number.

13209779980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13209779980 is an abundant number, since it is smaller than the sum of its proper divisors (15736869332).

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

13209779980 is a wasteful number, since it uses less digits than its factorization.

13209779980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28716945 (or 28716943 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 55.

The spelling of 13209779980 in words is "thirteen billion, two hundred nine million, seven hundred seventy-nine thousand, nine hundred eighty".