12246581172 has 72 divisors (see below), whose sum is σ = 33313563360. Its totient is φ = 3491355840.

The previous prime is 12246581167. The next prime is 12246581183. The reversal of 12246581172 is 27118564221.

It is a self number, because there is not a number n which added to its sum of digits gives 12246581172.

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, 248479 + ... + 293657.

It is an arithmetic number, because the mean of its divisors is an integer number (462688380).

Almost surely, 2^12246581172 is an apocalyptic number.

12246581172 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 12246581172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16656781680).

12246581172 is an abundant number, since it is smaller than the sum of its proper divisors (21066982188).

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

12246581172 is a wasteful number, since it uses less digits than its factorization.

12246581172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45661 (or 45652 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The spelling of 12246581172 in words is "twelve billion, two hundred forty-six million, five hundred eighty-one thousand, one hundred seventy-two".