12383279220 has 192 divisors, whose sum is σ = 38676363264. Its totient is φ = 2939811840.

The previous prime is 12383279171. The next prime is 12383279239. The reversal of 12383279220 is 2297238321.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 9018454 + ... + 9019826.

It is an arithmetic number, because the mean of its divisors is an integer number (201439392).

Almost surely, 2^12383279220 is an apocalyptic number.

12383279220 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 12383279220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19338181632).

12383279220 is an abundant number, since it is smaller than the sum of its proper divisors (26293084044).

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

12383279220 is a wasteful number, since it uses less digits than its factorization.

12383279220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 12383279220 in words is "twelve billion, three hundred eighty-three million, two hundred seventy-nine thousand, two hundred twenty".