445644131612 has 6 divisors (see below), whose sum is σ = 779877230328. Its totient is φ = 222822065804.

The previous prime is 445644131591. The next prime is 445644131617. The reversal of 445644131612 is 216131446544.

It is a self number, because there is not a number n which added to its sum of digits gives 445644131612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445644131617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55705516448 + ... + 55705516455.

It is an arithmetic number, because the mean of its divisors is an integer number (129979538388).

Almost surely, 2^445644131612 is an apocalyptic number.

It is an amenable number.

445644131612 is a deficient number, since it is larger than the sum of its proper divisors (334233098716).

445644131612 is a wasteful number, since it uses less digits than its factorization.

445644131612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111411032907 (or 111411032905 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The spelling of 445644131612 in words is "four hundred forty-five billion, six hundred forty-four million, one hundred thirty-one thousand, six hundred twelve".