442451831166 has 40 divisors (see below), whose sum is σ = 992259747864. Its totient is φ = 147358999440.

The previous prime is 442451831147. The next prime is 442451831179. The reversal of 442451831166 is 661138154244.

442451831166 is a `hidden beast` number, since 4 + 4 + 2 + 451 + 8 + 31 + 166 = 666.

442451831166 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 964980 + ... + 1347623.

Almost surely, 2^442451831166 is an apocalyptic number.

442451831166 is an abundant number, since it is smaller than the sum of its proper divisors (549807916698).

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

442451831166 is a wasteful number, since it uses less digits than its factorization.

442451831166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313798 (or 2313789 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 442451831166 in words is "four hundred forty-two billion, four hundred fifty-one million, eight hundred thirty-one thousand, one hundred sixty-six".