74593543457 has 4 divisors (see below), whose sum is σ = 74664653700. Its totient is φ = 74522433216.

The previous prime is 74593543439. The next prime is 74593543477. The reversal of 74593543457 is 75434539547.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71890479376 + 2703064081 = 268124^2 + 51991^2 .

It is a cyclic number.

It is not a de Polignac number, because 74593543457 - 2¹⁰ = 74593542433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74593543417) 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, 35553548 + ... + 35555645.

It is an arithmetic number, because the mean of its divisors is an integer number (18666163425).

Almost surely, 2^74593543457 is an apocalyptic number.

It is an amenable number.

74593543457 is a deficient number, since it is larger than the sum of its proper divisors (71110243).

74593543457 is a wasteful number, since it uses less digits than its factorization.

74593543457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71110242.

The product of its digits is 31752000, while the sum is 56.

The spelling of 74593543457 in words is "seventy-four billion, five hundred ninety-three million, five hundred forty-three thousand, four hundred fifty-seven".