11980902180 has 96 divisors (see below), whose sum is σ = 36245430144. Its totient is φ = 2939480064.

The previous prime is 11980902169. The next prime is 11980902187. The reversal of 11980902180 is 8120908911.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (11980902187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214444 + ... + 264476.

It is an arithmetic number, because the mean of its divisors is an integer number (377556564).

Almost surely, 2^11980902180 is an apocalyptic number.

11980902180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11980902180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18122715072).

11980902180 is an abundant number, since it is smaller than the sum of its proper divisors (24264527964).

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

11980902180 is a wasteful number, since it uses less digits than its factorization.

11980902180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50365 (or 50363 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 39.

The spelling of 11980902180 in words is "eleven billion, nine hundred eighty million, nine hundred two thousand, one hundred eighty".