44648957809 has 9 divisors (see below), whose sum is σ = 45020302219. Its totient is φ = 44280656680.

The previous prime is 44648957779. The next prime is 44648957863. The reversal of 44648957809 is 90875984644.

The square root of 44648957809 is 211303.

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., 27897350625 + 16751607184 = 167025^2 + 129428^2 .

It is not a de Polignac number, because 44648957809 - 2¹⁷ = 44648826737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44648957209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27679887 + ... + 27681499.

Almost surely, 2^44648957809 is an apocalyptic number.

44648957809 is the 211303-rd square number.

44648957809 is the 105652-nd centered octagonal number.

It is an amenable number.

44648957809 is a deficient number, since it is larger than the sum of its proper divisors (371344410).

44648957809 is an frugal number, since it uses more digits than its factorization.

44648957809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

Multiplying 44648957809 by its sum of digits (64), we get a square (2857533299776 = 1690424²).

The spelling of 44648957809 in words is "forty-four billion, six hundred forty-eight million, nine hundred fifty-seven thousand, eight hundred nine".