74766665543 has 2 divisors, whose sum is σ = 74766665544. Its totient is φ = 74766665542.

The previous prime is 74766665531. The next prime is 74766665609. The reversal of 74766665543 is 34556666747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74766665543 - 2¹⁰ = 74766664519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74766664543) 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, 37383332771 + 37383332772.

It is an arithmetic number, because the mean of its divisors is an integer number (37383332772).

Almost surely, 2^74766665543 is an apocalyptic number.

74766665543 is a deficient number, since it is larger than the sum of its proper divisors (1).

74766665543 is an equidigital number, since it uses as much as digits as its factorization.

74766665543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 59.

The spelling of 74766665543 in words is "seventy-four billion, seven hundred sixty-six million, six hundred sixty-five thousand, five hundred forty-three".