12166898912 has 96 divisors (see below), whose sum is σ = 29693200320. Its totient is φ = 4787896320.

The previous prime is 12166898893. The next prime is 12166898923. The reversal of 12166898912 is 21989866121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117164 + ... + 195092.

It is an arithmetic number, because the mean of its divisors is an integer number (309304170).

Almost surely, 2^12166898912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12166898912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14846600160).

12166898912 is an abundant number, since it is smaller than the sum of its proper divisors (17526301408).

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

12166898912 is a wasteful number, since it uses less digits than its factorization.

12166898912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78004 (or 77996 counting only the distinct ones).

The product of its digits is 746496, while the sum is 53.

The spelling of 12166898912 in words is "twelve billion, one hundred sixty-six million, eight hundred ninety-eight thousand, nine hundred twelve".