44243652645 has 12 divisors (see below), whose sum is σ = 76688997996. Its totient is φ = 23596614720.

The previous prime is 44243652577. The next prime is 44243652671. The reversal of 44243652645 is 54625634244.

It is a happy number.

44243652645 is a `hidden beast` number, since 4 + 4 + 24 + 365 + 264 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13788865476 + 30454787169 = 117426^2 + 174513^2 .

It is not a de Polignac number, because 44243652645 - 2⁸ = 44243652389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 983192281 = 44243652645 / (4 + 4 + 2 + 4 + 3 + 6 + 5 + 2 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 44243652645.

It is a congruent number.

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, 491596096 + ... + 491596185.

It is an arithmetic number, because the mean of its divisors is an integer number (6390749833).

Almost surely, 2^44243652645 is an apocalyptic number.

44243652645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44243652645 is a deficient number, since it is larger than the sum of its proper divisors (32445345351).

44243652645 is a wasteful number, since it uses less digits than its factorization.

44243652645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983192292 (or 983192289 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 45.

The spelling of 44243652645 in words is "forty-four billion, two hundred forty-three million, six hundred fifty-two thousand, six hundred forty-five".