74666944966647 has 24 divisors (see below), whose sum is σ = 109458811108080. Its totient is φ = 45240465952000.

The previous prime is 74666944966619. The next prime is 74666944966751.

74666944966647 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74666944966647 - 2¹⁵ = 74666944933879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74666944966647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74666944961647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26445522 + ... + 29132447.

It is an arithmetic number, because the mean of its divisors is an integer number (4560783796170).

Almost surely, 2^{74666944966647} is an apocalyptic number.

74666944966647 is a deficient number, since it is larger than the sum of its proper divisors (34791866141433).

74666944966647 is a wasteful number, since it uses less digits than its factorization.

74666944966647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55581695 (or 55581684 counting only the distinct ones).

The product of its digits is 47405481984, while the sum is 84.

The spelling of 74666944966647 in words is "seventy-four trillion, six hundred sixty-six billion, nine hundred forty-four million, nine hundred sixty-six thousand, six hundred forty-seven".