44138648464 has 45 divisors (see below), whose sum is σ = 87250677969. Its totient is φ = 21631072320.

The previous prime is 44138648453. The next prime is 44138648467. The reversal of 44138648464 is 46484683144.

The square root of 44138648464 is 210092.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 31819424400 + 12319224064 = 178380^2 + 110992^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44138648467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44539009 + ... + 44539999.

Almost surely, 2^44138648464 is an apocalyptic number.

44138648464 is the 210092-nd square number.

It is an amenable number.

44138648464 is a deficient number, since it is larger than the sum of its proper divisors (43112029505).

44138648464 is an frugal number, since it uses more digits than its factorization.

44138648464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 1046 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 52.

The spelling of 44138648464 in words is "forty-four billion, one hundred thirty-eight million, six hundred forty-eight thousand, four hundred sixty-four".