444465861820 has 24 divisors (see below), whose sum is σ = 958604752224. Its totient is φ = 172981308096.

The previous prime is 444465861803. The next prime is 444465861821. The reversal of 444465861820 is 28168564444.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444465861821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 300314032 + ... + 300315511.

It is an arithmetic number, because the mean of its divisors is an integer number (39941864676).

Almost surely, 2^444465861820 is an apocalyptic number.

It is an amenable number.

444465861820 is an abundant number, since it is smaller than the sum of its proper divisors (514138890404).

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

444465861820 is a wasteful number, since it uses less digits than its factorization.

444465861820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600629589 (or 600629587 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 52.

The spelling of 444465861820 in words is "four hundred forty-four billion, four hundred sixty-five million, eight hundred sixty-one thousand, eight hundred twenty".