12117880000 has 140 divisors (see below), whose sum is σ = 30158402472. Its totient is φ = 4829440000.

The previous prime is 12117879979. The next prime is 12117880081. The reversal of 12117880000 is 8871121.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19639692 + ... + 19640308.

Almost surely, 2^12117880000 is an apocalyptic number.

12117880000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12117880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15079201236).

12117880000 is an abundant number, since it is smaller than the sum of its proper divisors (18040522472).

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

12117880000 is an frugal number, since it uses more digits than its factorization.

12117880000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The spelling of 12117880000 in words is "twelve billion, one hundred seventeen million, eight hundred eighty thousand".