66274579583 has 8 divisors (see below), whose sum is σ = 66347650800. Its totient is φ = 66201546880.

The previous prime is 66274579571. The next prime is 66274579589. The reversal of 66274579583 is 38597547266.

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 66274579583 - 2²⁰ = 66273531007 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 (66274579589) 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 7 ways as a sum of consecutive naturals, for example, 4547993 + ... + 4562541.

It is an arithmetic number, because the mean of its divisors is an integer number (8293456350).

Almost surely, 2^66274579583 is an apocalyptic number.

66274579583 is a deficient number, since it is larger than the sum of its proper divisors (73071217).

66274579583 is a wasteful number, since it uses less digits than its factorization.

66274579583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19257.

The product of its digits is 76204800, while the sum is 62.

The spelling of 66274579583 in words is "sixty-six billion, two hundred seventy-four million, five hundred seventy-nine thousand, five hundred eighty-three".