66586222592 has 42 divisors (see below), whose sum is σ = 133211041299. Its totient is φ = 33281433600.

The previous prime is 66586222567. The next prime is 66586222597. The reversal of 66586222592 is 29522268566.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 33293111296 + 33293111296 = 182464^2 + 182464^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=182464.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66586222597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23353967 + ... + 23356817.

Almost surely, 2^66586222592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66586222592

66586222592 is an abundant number, since it is smaller than the sum of its proper divisors (66624818707).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66586222592 is an frugal number, since it uses more digits than its factorization.

66586222592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728 (or 2853 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 53.

The spelling of 66586222592 in words is "sixty-six billion, five hundred eighty-six million, two hundred twenty-two thousand, five hundred ninety-two".