44728243891 has 2 divisors, whose sum is σ = 44728243892. Its totient is φ = 44728243890.

The previous prime is 44728243829. The next prime is 44728243933. The reversal of 44728243891 is 19834282744.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44728243891 is a prime.

It is not a weakly prime, because it can be changed into another prime (44728243811) 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 as a sum of consecutive naturals, namely, 22364121945 + 22364121946.

It is an arithmetic number, because the mean of its divisors is an integer number (22364121946).

Almost surely, 2^44728243891 is an apocalyptic number.

44728243891 is a deficient number, since it is larger than the sum of its proper divisors (1).

44728243891 is an equidigital number, since it uses as much as digits as its factorization.

44728243891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 52.

The spelling of 44728243891 in words is "forty-four billion, seven hundred twenty-eight million, two hundred forty-three thousand, eight hundred ninety-one".