74639346593 has 4 divisors (see below), whose sum is σ = 85302110400. Its totient is φ = 63976582788.

The previous prime is 74639346581. The next prime is 74639346601. The reversal of 74639346593 is 39564393647.

It is a happy number.

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: 39564393647 = 431 ⋅91796737.

It is a cyclic number.

It is not a de Polignac number, because 74639346593 - 2²⁴ = 74622569377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74639346533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5331381893 + ... + 5331381906.

It is an arithmetic number, because the mean of its divisors is an integer number (21325527600).

Almost surely, 2^74639346593 is an apocalyptic number.

It is an amenable number.

74639346593 is a deficient number, since it is larger than the sum of its proper divisors (10662763807).

74639346593 is a wasteful number, since it uses less digits than its factorization.

74639346593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662763806.

The product of its digits is 44089920, while the sum is 59.

The spelling of 74639346593 in words is "seventy-four billion, six hundred thirty-nine million, three hundred forty-six thousand, five hundred ninety-three".