12139032444 has 288 divisors, whose sum is σ = 38795210496. Its totient is φ = 2910136320.

The previous prime is 12139032383. The next prime is 12139032457. The reversal of 12139032444 is 44423093121.

It is a super-2 number, since 2×12139032444² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5826627 + ... + 5828709.

It is an arithmetic number, because the mean of its divisors is an integer number (134705592).

Almost surely, 2^12139032444 is an apocalyptic number.

12139032444 is a gapful number since it is divisible by the number (14) 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 12139032444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19397605248).

12139032444 is an abundant number, since it is smaller than the sum of its proper divisors (26656178052).

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

12139032444 is a wasteful number, since it uses less digits than its factorization.

12139032444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 12139032444 in words is "twelve billion, one hundred thirty-nine million, thirty-two thousand, four hundred forty-four".