44623632644 has 12 divisors (see below), whose sum is σ = 79996024668. Its totient is φ = 21767625600.

The previous prime is 44623632593. The next prime is 44623632661.

44623632644 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 2254350400 + 42369282244 = 47480^2 + 205838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 44623632595 and 44623632604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136047497 + ... + 136047824.

It is an arithmetic number, because the mean of its divisors is an integer number (6666335389).

Almost surely, 2^44623632644 is an apocalyptic number.

It is an amenable number.

44623632644 is a deficient number, since it is larger than the sum of its proper divisors (35372392024).

44623632644 is a wasteful number, since it uses less digits than its factorization.

44623632644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272095366 (or 272095364 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 44.

The spelling of 44623632644 in words is "forty-four billion, six hundred twenty-three million, six hundred thirty-two thousand, six hundred forty-four".