12115680520 has 64 divisors (see below), whose sum is σ = 27385827840. Its totient is φ = 4824019200.

The previous prime is 12115680517. The next prime is 12115680527. The reversal of 12115680520 is 2508651121.

It is not an unprimeable number, because it can be changed into a prime (12115680527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13298865 + ... + 13299775.

It is an arithmetic number, because the mean of its divisors is an integer number (427903560).

Almost surely, 2^12115680520 is an apocalyptic number.

12115680520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12115680520 is an abundant number, since it is smaller than the sum of its proper divisors (15270147320).

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

12115680520 is a wasteful number, since it uses less digits than its factorization.

12115680520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2082 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 12115680520 in words is "twelve billion, one hundred fifteen million, six hundred eighty thousand, five hundred twenty".