44639344393643 has 4 divisors (see below), whose sum is σ = 44645751655440. Its totient is φ = 44632937131848.

The previous prime is 44639344393601. The next prime is 44639344393667. The reversal of 44639344393643 is 34639344393644.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44639344393643 - 2³² = 44635049426347 is a prime.

It is a super-2 number, since 2×44639344393643² (a number of 28 digits) contains 22 as substring.

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 44639344393643.

It is not an unprimeable number, because it can be changed into a prime (44639344393673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3203620448 + ... + 3203634381.

It is an arithmetic number, because the mean of its divisors is an integer number (11161437913860).

Almost surely, 2^{44639344393643} is an apocalyptic number.

44639344393643 is a deficient number, since it is larger than the sum of its proper divisors (6407261797).

44639344393643 is an equidigital number, since it uses as much as digits as its factorization.

44639344393643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6407261796.

The product of its digits is 725594112, while the sum is 65.

Subtracting from 44639344393643 its reverse (34639344393644), we obtain a palindrome (9999999999999).

The spelling of 44639344393643 in words is "forty-four trillion, six hundred thirty-nine billion, three hundred forty-four million, three hundred ninety-three thousand, six hundred forty-three".