44728716161 has 2 divisors, whose sum is σ = 44728716162. Its totient is φ = 44728716160.

The previous prime is 44728716157. The next prime is 44728716169. The reversal of 44728716161 is 16161782744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27707599936 + 17021116225 = 166456^2 + 130465^2 .

It is a cyclic number.

It is not a de Polignac number, because 44728716161 - 2² = 44728716157 is a prime.

It is a super-2 number, since 2×44728716161² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44728716169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22364358080 + 22364358081.

It is an arithmetic number, because the mean of its divisors is an integer number (22364358081).

Almost surely, 2^44728716161 is an apocalyptic number.

It is an amenable number.

44728716161 is a deficient number, since it is larger than the sum of its proper divisors (1).

44728716161 is an equidigital number, since it uses as much as digits as its factorization.

44728716161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 47.

The spelling of 44728716161 in words is "forty-four billion, seven hundred twenty-eight million, seven hundred sixteen thousand, one hundred sixty-one".