12115660242 has 32 divisors (see below), whose sum is σ = 28082985984. Its totient is φ = 3412861200.

The previous prime is 12115660237. The next prime is 12115660243. The reversal of 12115660242 is 24206651121.

It is not an unprimeable number, because it can be changed into a prime (12115660243) 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, 2028484 + ... + 2034447.

It is an arithmetic number, because the mean of its divisors is an integer number (877593312).

Almost surely, 2^12115660242 is an apocalyptic number.

12115660242 is an abundant number, since it is smaller than the sum of its proper divisors (15967325742).

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

12115660242 is a wasteful number, since it uses less digits than its factorization.

12115660242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063014.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 12115660242 in words is "twelve billion, one hundred fifteen million, six hundred sixty thousand, two hundred forty-two".