12129838376 has 8 divisors (see below), whose sum is σ = 22743446970. Its totient is φ = 6064919184.

The previous prime is 12129838367. The next prime is 12129838387. The reversal of 12129838376 is 67383892121.

It can be written as a sum of positive squares in only one way, i.e., 12127735876 + 2102500 = 110126^2 + 1450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758114891 + ... + 758114906.

Almost surely, 2^12129838376 is an apocalyptic number.

It is an amenable number.

12129838376 is a deficient number, since it is larger than the sum of its proper divisors (10613608594).

12129838376 is a wasteful number, since it uses less digits than its factorization.

12129838376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516229803 (or 1516229799 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The spelling of 12129838376 in words is "twelve billion, one hundred twenty-nine million, eight hundred thirty-eight thousand, three hundred seventy-six".