74139665593 has 8 divisors (see below), whose sum is σ = 84743599680. Its totient is φ = 63538869840.

The previous prime is 74139665581. The next prime is 74139665609. The reversal of 74139665593 is 39556693147.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74139665593 - 2⁹ = 74139665081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74139665513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733738 + ... + 828643.

It is an arithmetic number, because the mean of its divisors is an integer number (10592949960).

Almost surely, 2^74139665593 is an apocalyptic number.

It is an amenable number.

74139665593 is a deficient number, since it is larger than the sum of its proper divisors (10603934087).

74139665593 is a wasteful number, since it uses less digits than its factorization.

74139665593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569167.

The product of its digits is 18370800, while the sum is 58.

The spelling of 74139665593 in words is "seventy-four billion, one hundred thirty-nine million, six hundred sixty-five thousand, five hundred ninety-three".