12255821466 has 64 divisors (see below), whose sum is σ = 29242295040. Its totient is φ = 3351144960.

The previous prime is 12255821453. The next prime is 12255821477. The reversal of 12255821466 is 66412855221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30150 + ... + 159438.

It is an arithmetic number, because the mean of its divisors is an integer number (456910860).

Almost surely, 2^12255821466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12255821466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14621147520).

12255821466 is an abundant number, since it is smaller than the sum of its proper divisors (16986473574).

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

12255821466 is a wasteful number, since it uses less digits than its factorization.

12255821466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129399.

The product of its digits is 230400, while the sum is 42.

The spelling of 12255821466 in words is "twelve billion, two hundred fifty-five million, eight hundred twenty-one thousand, four hundred sixty-six".