444631136443 has 8 divisors (see below), whose sum is σ = 499652381088. Its totient is φ = 392584013184.

The previous prime is 444631136431. The next prime is 444631136449. The reversal of 444631136443 is 344631136444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444631136443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444631136443.

It is not an unprimeable number, because it can be changed into a prime (444631136449) 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, 743530030 + ... + 743530627.

It is an arithmetic number, because the mean of its divisors is an integer number (62456547636).

Almost surely, 2^444631136443 is an apocalyptic number.

444631136443 is a deficient number, since it is larger than the sum of its proper divisors (55021244645).

444631136443 is a wasteful number, since it uses less digits than its factorization.

444631136443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487060693.

The product of its digits is 995328, while the sum is 43.

Subtracting from 444631136443 its reverse (344631136444), we obtain a palindrome (99999999999).

The spelling of 444631136443 in words is "four hundred forty-four billion, six hundred thirty-one million, one hundred thirty-six thousand, four hundred forty-three".