12239549952 has 160 divisors (see below), whose sum is σ = 38468204544. Its totient is φ = 3384115200.

The previous prime is 12239549951. The next prime is 12239549989. The reversal of 12239549952 is 25994593221.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12239549895 and 12239549904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12239549951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314952 + ... + 351672.

Almost surely, 2^12239549952 is an apocalyptic number.

12239549952 is a gapful number since it is divisible by the number (12) 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 12239549952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19234102272).

12239549952 is an abundant number, since it is smaller than the sum of its proper divisors (26228654592).

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

12239549952 is an equidigital number, since it uses as much as digits as its factorization.

12239549952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36780 (or 36764 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 51.

The spelling of 12239549952 in words is "twelve billion, two hundred thirty-nine million, five hundred forty-nine thousand, nine hundred fifty-two".