74320768146589 has 4 divisors (see below), whose sum is σ = 74321111239324. Its totient is φ = 74320425053856.

The previous prime is 74320768146533. The next prime is 74320768146607. The reversal of 74320768146589 is 98564186702347.

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 5640349503364 + 68680418643225 = 2374942^2 + 8287365^2 .

It is a cyclic number.

It is not a de Polignac number, because 74320768146589 - 2¹¹ = 74320768144541 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 (74320768146089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171221232 + ... + 171654745.

It is an arithmetic number, because the mean of its divisors is an integer number (18580277809831).

It is a 1-persistent number, because it is pandigital, but 2⋅74320768146589 = 148641536293178 is not.

Almost surely, 2^{74320768146589} is an apocalyptic number.

It is an amenable number.

74320768146589 is a deficient number, since it is larger than the sum of its proper divisors (343092735).

74320768146589 is a wasteful number, since it uses less digits than its factorization.

74320768146589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343092734.

The product of its (nonzero) digits is 487710720, while the sum is 70.

The spelling of 74320768146589 in words is "seventy-four trillion, three hundred twenty billion, seven hundred sixty-eight million, one hundred forty-six thousand, five hundred eighty-nine".