11559999980 has 12 divisors (see below), whose sum is σ = 24276000000. Its totient is φ = 4623999984.

The previous prime is 11559999973. The next prime is 11560000013. The reversal of 11559999980 is 8999995511.

11559999980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288999980 + ... + 289000019.

It is an arithmetic number, because the mean of its divisors is an integer number (2023000000).

Almost surely, 2^11559999980 is an apocalyptic number.

11559999980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11559999980 is an abundant number, since it is smaller than the sum of its proper divisors (12716000020).

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

11559999980 is a wasteful number, since it uses less digits than its factorization.

11559999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578000008 (or 578000006 counting only the distinct ones).

The product of its (nonzero) digits is 11809800, while the sum is 65.

The spelling of 11559999980 in words is "eleven billion, five hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred eighty".