12243769920 has 448 divisors, whose sum is σ = 47226931200. Its totient is φ = 2972712960.

The previous prime is 12243769897. The next prime is 12243769949. The reversal of 12243769920 is 2996734221.

12243769920 is a `hidden beast` number, since 122 + 437 + 6 + 9 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4551936 + ... + 4554624.

Almost surely, 2^12243769920 is an apocalyptic number.

12243769920 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 12243769920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23613465600).

12243769920 is an abundant number, since it is smaller than the sum of its proper divisors (34983161280).

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

12243769920 is a wasteful number, since it uses less digits than its factorization.

12243769920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2747 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 12243769920 in words is "twelve billion, two hundred forty-three million, seven hundred sixty-nine thousand, nine hundred twenty".