444722667864 has 64 divisors (see below), whose sum is σ = 1163876912640. Its totient is φ = 141339644160.

The previous prime is 444722667863. The next prime is 444722667911. The reversal of 444722667864 is 468766227444.

It is a junction number, because it is equal to n+sod(n) for n = 444722667798 and 444722667807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444722667863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123597 + ... + 1466940.

It is an arithmetic number, because the mean of its divisors is an integer number (18185576760).

Almost surely, 2^444722667864 is an apocalyptic number.

It is an amenable number.

444722667864 is an abundant number, since it is smaller than the sum of its proper divisors (719154244776).

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

444722667864 is a wasteful number, since it uses less digits than its factorization.

444722667864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590880 (or 2590876 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 60.

The spelling of 444722667864 in words is "four hundred forty-four billion, seven hundred twenty-two million, six hundred sixty-seven thousand, eight hundred sixty-four".