44491561759 has 2 divisors, whose sum is σ = 44491561760. Its totient is φ = 44491561758.

The previous prime is 44491561757. The next prime is 44491561819. The reversal of 44491561759 is 95716519444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44491561759 - 2¹ = 44491561757 is a prime.

It is a super-2 number, since 2×44491561759² (a number of 22 digits) contains 22 as substring.

Together with 44491561757, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44491561757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22245780879 + 22245780880.

It is an arithmetic number, because the mean of its divisors is an integer number (22245780880).

Almost surely, 2^44491561759 is an apocalyptic number.

44491561759 is a deficient number, since it is larger than the sum of its proper divisors (1).

44491561759 is an equidigital number, since it uses as much as digits as its factorization.

44491561759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The spelling of 44491561759 in words is "forty-four billion, four hundred ninety-one million, five hundred sixty-one thousand, seven hundred fifty-nine".