12251788332 has 24 divisors (see below), whose sum is σ = 32671435776. Its totient is φ = 3500510928.

The previous prime is 12251788319. The next prime is 12251788337. The reversal of 12251788332 is 23388715221.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (12251788337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72927228 + ... + 72927395.

It is an arithmetic number, because the mean of its divisors is an integer number (1361309824).

Almost surely, 2^12251788332 is an apocalyptic number.

12251788332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12251788332 is an abundant number, since it is smaller than the sum of its proper divisors (20419647444).

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

12251788332 is a wasteful number, since it uses less digits than its factorization.

12251788332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145854637 (or 145854635 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The spelling of 12251788332 in words is "twelve billion, two hundred fifty-one million, seven hundred eighty-eight thousand, three hundred thirty-two".