123666225282 has 80 divisors (see below), whose sum is σ = 278966952000. Its totient is φ = 40945655520.

The previous prime is 123666225259. The next prime is 123666225289. The reversal of 123666225282 is 282522666321.

It is not an unprimeable number, because it can be changed into a prime (123666225289) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21241932 + ... + 21247752.

It is an arithmetic number, because the mean of its divisors is an integer number (3487086900).

Almost surely, 2^123666225282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123666225282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139483476000).

123666225282 is an abundant number, since it is smaller than the sum of its proper divisors (155300726718).

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

123666225282 is a wasteful number, since it uses less digits than its factorization.

123666225282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6693 (or 6684 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 123666225282 in words is "one hundred twenty-three billion, six hundred sixty-six million, two hundred twenty-five thousand, two hundred eighty-two".