44357985169 has 2 divisors, whose sum is σ = 44357985170. Its totient is φ = 44357985168.

The previous prime is 44357985079. The next prime is 44357985223. The reversal of 44357985169 is 96158975344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26432256400 + 17925728769 = 162580^2 + 133887^2 .

It is a cyclic number.

It is not a de Polignac number, because 44357985169 - 2⁷ = 44357985041 is a prime.

It is a super-2 number, since 2×44357985169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44357985869) 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, 22178992584 + 22178992585.

It is an arithmetic number, because the mean of its divisors is an integer number (22178992585).

Almost surely, 2^44357985169 is an apocalyptic number.

It is an amenable number.

44357985169 is a deficient number, since it is larger than the sum of its proper divisors (1).

44357985169 is an equidigital number, since it uses as much as digits as its factorization.

44357985169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 61.

The spelling of 44357985169 in words is "forty-four billion, three hundred fifty-seven million, nine hundred eighty-five thousand, one hundred sixty-nine".