444975381980 has 24 divisors (see below), whose sum is σ = 964591797120. Its totient is φ = 172248534720.

The previous prime is 444975381979. The next prime is 444975381989. The reversal of 444975381980 is 89183579444.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444975381989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358850495 + ... + 358851734.

It is an arithmetic number, because the mean of its divisors is an integer number (40191324880).

Almost surely, 2^444975381980 is an apocalyptic number.

It is an amenable number.

444975381980 is an abundant number, since it is smaller than the sum of its proper divisors (519616415140).

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

444975381980 is a wasteful number, since it uses less digits than its factorization.

444975381980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717702269 (or 717702267 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 444975381980 in words is "four hundred forty-four billion, nine hundred seventy-five million, three hundred eighty-one thousand, nine hundred eighty".