12183779220 has 48 divisors (see below), whose sum is σ = 34293224448. Its totient is φ = 3231994240.

The previous prime is 12183779183. The next prime is 12183779233. The reversal of 12183779220 is 2297738121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520119 + ... + 543038.

It is an arithmetic number, because the mean of its divisors is an integer number (714442176).

Almost surely, 2^12183779220 is an apocalyptic number.

12183779220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12183779220 is an abundant number, since it is smaller than the sum of its proper divisors (22109445228).

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

12183779220 is a wasteful number, since it uses less digits than its factorization.

12183779220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063360 (or 1063358 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 12183779220 in words is "twelve billion, one hundred eighty-three million, seven hundred seventy-nine thousand, two hundred twenty".