12015748866 has 16 divisors (see below), whose sum is σ = 26216179488. Its totient is φ = 3641136000.

The previous prime is 12015748859. The next prime is 12015748883. The reversal of 12015748866 is 66884751021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91028335 + ... + 91028466.

It is an arithmetic number, because the mean of its divisors is an integer number (1638511218).

Almost surely, 2^12015748866 is an apocalyptic number.

12015748866 is an abundant number, since it is smaller than the sum of its proper divisors (14200430622).

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

12015748866 is a wasteful number, since it uses less digits than its factorization.

12015748866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182056817.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 12015748866 in words is "twelve billion, fifteen million, seven hundred forty-eight thousand, eight hundred sixty-six".