12255775920 has 60 divisors (see below), whose sum is σ = 41158983216. Its totient is φ = 3268206720.

The previous prime is 12255775913. The next prime is 12255775921. The reversal of 12255775920 is 2957755221.

12255775920 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 57 + 7 + 592 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is not an unprimeable number, because it can be changed into a prime (12255775921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8510236 + ... + 8511675.

Almost surely, 2^12255775920 is an apocalyptic number.

12255775920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12255775920 is an abundant number, since it is smaller than the sum of its proper divisors (28903207296).

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

12255775920 is a wasteful number, since it uses less digits than its factorization.

12255775920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17021930 (or 17021921 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 12255775920 in words is "twelve billion, two hundred fifty-five million, seven hundred seventy-five thousand, nine hundred twenty".