12227732736 has 72 divisors (see below), whose sum is σ = 32751208224. Its totient is φ = 4049909760.

The previous prime is 12227732717. The next prime is 12227732743. The reversal of 12227732736 is 63723772221.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 69871 + ... + 171281.

It is an arithmetic number, because the mean of its divisors is an integer number (454877892).

Almost surely, 2^12227732736 is an apocalyptic number.

12227732736 is a gapful number since it is divisible by the number (16) 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 12227732736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16375604112).

12227732736 is an abundant number, since it is smaller than the sum of its proper divisors (20523475488).

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

12227732736 is a wasteful number, since it uses less digits than its factorization.

12227732736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101587 (or 101573 counting only the distinct ones).

The product of its digits is 296352, while the sum is 42.

The spelling of 12227732736 in words is "twelve billion, two hundred twenty-seven million, seven hundred thirty-two thousand, seven hundred thirty-six".