44621612644 has 36 divisors (see below), whose sum is σ = 91490412720. Its totient is φ = 18985957200.

The previous prime is 44621612639. The next prime is 44621612657.

44621612644 is nontrivially palindromic in base 10.

44621612644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 44621612597 and 44621612606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 791682 + ... + 846169.

Almost surely, 2^44621612644 is an apocalyptic number.

It is an amenable number.

44621612644 is an abundant number, since it is smaller than the sum of its proper divisors (46868800076).

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

44621612644 is a wasteful number, since it uses less digits than its factorization.

44621612644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638008 (or 1637999 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The spelling of 44621612644 in words is "forty-four billion, six hundred twenty-one million, six hundred twelve thousand, six hundred forty-four".