12127983820 has 24 divisors (see below), whose sum is σ = 25478274528. Its totient is φ = 4849382400.

The previous prime is 12127983739. The next prime is 12127983853. The reversal of 12127983820 is 2838972121.

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, 57621 + ... + 166060.

It is an arithmetic number, because the mean of its divisors is an integer number (1061594772).

Almost surely, 2^12127983820 is an apocalyptic number.

12127983820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12127983820 is an abundant number, since it is smaller than the sum of its proper divisors (13350290708).

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

12127983820 is a wasteful number, since it uses less digits than its factorization.

12127983820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226401 (or 226399 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 12127983820 in words is "twelve billion, one hundred twenty-seven million, nine hundred eighty-three thousand, eight hundred twenty".