74766665573 has 4 divisors (see below), whose sum is σ = 74770924800. Its totient is φ = 74762406348.

The previous prime is 74766665543. The next prime is 74766665609. The reversal of 74766665573 is 37556666747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37556666747 = 17 ⋅2209215691.

It is a cyclic number.

It is not a de Polignac number, because 74766665573 - 2¹² = 74766661477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74766665543) 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 in 3 ways as a sum of consecutive naturals, for example, 2103173 + ... + 2138426.

It is an arithmetic number, because the mean of its divisors is an integer number (18692731200).

Almost surely, 2^74766665573 is an apocalyptic number.

It is an amenable number.

74766665573 is a deficient number, since it is larger than the sum of its proper divisors (4259227).

74766665573 is a wasteful number, since it uses less digits than its factorization.

74766665573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259226.

The product of its digits is 133358400, while the sum is 62.

The spelling of 74766665573 in words is "seventy-four billion, seven hundred sixty-six million, six hundred sixty-five thousand, five hundred seventy-three".