74240169589 has 2 divisors, whose sum is σ = 74240169590. Its totient is φ = 74240169588.

The previous prime is 74240169587. The next prime is 74240169659. The reversal of 74240169589 is 98596104247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62608547089 + 11631622500 = 250217^2 + 107850^2 .

It is an emirp because it is prime and its reverse (98596104247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74240169589 - 2¹ = 74240169587 is a prime.

Together with 74240169587, 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 (74240169587) 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, 37120084794 + 37120084795.

It is an arithmetic number, because the mean of its divisors is an integer number (37120084795).

Almost surely, 2^74240169589 is an apocalyptic number.

It is an amenable number.

74240169589 is a deficient number, since it is larger than the sum of its proper divisors (1).

74240169589 is an equidigital number, since it uses as much as digits as its factorization.

74240169589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 74240169589 in words is "seventy-four billion, two hundred forty million, one hundred sixty-nine thousand, five hundred eighty-nine".