444681720138382 has 16 divisors (see below), whose sum is σ = 668938687280640. Its totient is φ = 221702431664952.

The previous prime is 444681720138307. The next prime is 444681720138391. The reversal of 444681720138382 is 283831027186444.

It is a self number, because there is not a number n which added to its sum of digits gives 444681720138382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65239518 + ... + 71732545.

It is an arithmetic number, because the mean of its divisors is an integer number (41808667955040).

Almost surely, 2^{444681720138382} is an apocalyptic number.

444681720138382 is a deficient number, since it is larger than the sum of its proper divisors (224256967142258).

444681720138382 is a wasteful number, since it uses less digits than its factorization.

444681720138382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136976727.

The product of its (nonzero) digits is 49545216, while the sum is 61.

The spelling of 444681720138382 in words is "four hundred forty-four trillion, six hundred eighty-one billion, seven hundred twenty million, one hundred thirty-eight thousand, three hundred eighty-two".