12227647640 has 128 divisors (see below), whose sum is σ = 30221190720. Its totient is φ = 4425062400.

The previous prime is 12227647567. The next prime is 12227647651. The reversal of 12227647640 is 4674672221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12592355 + ... + 12593325.

Almost surely, 2^12227647640 is an apocalyptic number.

12227647640 is a gapful number since it is divisible by the number (10) 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 12227647640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15110595360).

12227647640 is an abundant number, since it is smaller than the sum of its proper divisors (17993543080).

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

12227647640 is a wasteful number, since it uses less digits than its factorization.

12227647640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 12227647640 in words is "twelve billion, two hundred twenty-seven million, six hundred forty-seven thousand, six hundred forty".