445666623140 has 48 divisors (see below), whose sum is σ = 997628217600. Its totient is φ = 166746408192.

The previous prime is 445666623137. The next prime is 445666623151. The reversal of 445666623140 is 41326666544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7392809 + ... + 7452848.

It is an arithmetic number, because the mean of its divisors is an integer number (20783921200).

Almost surely, 2^445666623140 is an apocalyptic number.

It is an amenable number.

445666623140 is an abundant number, since it is smaller than the sum of its proper divisors (551961594460).

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

445666623140 is a wasteful number, since it uses less digits than its factorization.

445666623140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14845764 (or 14845762 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 445666623140 in words is "four hundred forty-five billion, six hundred sixty-six million, six hundred twenty-three thousand, one hundred forty".