44544621644 has 12 divisors (see below), whose sum is σ = 80641125600. Its totient is φ = 21504300048.

The previous prime is 44544621643. The next prime is 44544621689. The reversal of 44544621644 is 44612644544.

44544621644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×44544621644² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44544621595 and 44544621604.

It is not an unprimeable number, because it can be changed into a prime (44544621643) 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, 192002564 + ... + 192002795.

It is an arithmetic number, because the mean of its divisors is an integer number (6720093800).

Almost surely, 2^44544621644 is an apocalyptic number.

It is an amenable number.

44544621644 is a deficient number, since it is larger than the sum of its proper divisors (36096503956).

44544621644 is a wasteful number, since it uses less digits than its factorization.

44544621644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384005392 (or 384005390 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 44.

The spelling of 44544621644 in words is "forty-four billion, five hundred forty-four million, six hundred twenty-one thousand, six hundred forty-four".