66791302593 has 8 divisors (see below), whose sum is σ = 89056287456. Its totient is φ = 44526926400.

The previous prime is 66791302577. The next prime is 66791302637. The reversal of 66791302593 is 39520319766.

It is a happy number.

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

It is not a de Polignac number, because 66791302593 - 2⁴ = 66791302577 is a prime.

It is a super-2 number, since 2×66791302593² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66791302093) 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 7 ways as a sum of consecutive naturals, for example, 275958 + ... + 457968.

It is an arithmetic number, because the mean of its divisors is an integer number (11132035932).

Almost surely, 2^66791302593 is an apocalyptic number.

It is an amenable number.

66791302593 is a deficient number, since it is larger than the sum of its proper divisors (22264984863).

66791302593 is a wasteful number, since it uses less digits than its factorization.

66791302593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304335.

The product of its (nonzero) digits is 1837080, while the sum is 51.

The spelling of 66791302593 in words is "sixty-six billion, seven hundred ninety-one million, three hundred two thousand, five hundred ninety-three".