12139496928 has 144 divisors (see below), whose sum is σ = 37246154400. Its totient is φ = 3728305152.

The previous prime is 12139496909. The next prime is 12139496933. The reversal of 12139496928 is 82969493121.

12139496928 is a `hidden beast` number, since 12 + 139 + 496 + 9 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2239950 + ... + 2245362.

It is an arithmetic number, because the mean of its divisors is an integer number (258653850).

Almost surely, 2^12139496928 is an apocalyptic number.

12139496928 is a gapful number since it is divisible by the number (18) 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 12139496928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18623077200).

12139496928 is an abundant number, since it is smaller than the sum of its proper divisors (25106657472).

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

12139496928 is a wasteful number, since it uses less digits than its factorization.

12139496928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041 (or 6030 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 12139496928 in words is "twelve billion, one hundred thirty-nine million, four hundred ninety-six thousand, nine hundred twenty-eight".