44564138988 has 12 divisors (see below), whose sum is σ = 103982991000. Its totient is φ = 14854712992.

The previous prime is 44564138947. The next prime is 44564139041. The reversal of 44564138988 is 88983146544.

It is a happy number.

44564138988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1856839113 + ... + 1856839136.

It is an arithmetic number, because the mean of its divisors is an integer number (8665249250).

Almost surely, 2^44564138988 is an apocalyptic number.

It is an amenable number.

44564138988 is an abundant number, since it is smaller than the sum of its proper divisors (59418852012).

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

44564138988 is a wasteful number, since it uses less digits than its factorization.

44564138988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713678256 (or 3713678254 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 60.

The spelling of 44564138988 in words is "forty-four billion, five hundred sixty-four million, one hundred thirty-eight thousand, nine hundred eighty-eight".