66522422566 has 8 divisors (see below), whose sum is σ = 104122052784. Its totient is φ = 31815071640.

The previous prime is 66522422563. The next prime is 66522422591.

It is a happy number.

66522422566 is nontrivially palindromic in base 10.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 1446139621 = 66522422566 / (6 + 6 + 5 + 2 + 2 + 4 + 2 + 2 + 5 + 6 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66522422563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723069765 + ... + 723069856.

It is an arithmetic number, because the mean of its divisors is an integer number (13015256598).

Almost surely, 2^66522422566 is an apocalyptic number.

66522422566 is a deficient number, since it is larger than the sum of its proper divisors (37599630218).

66522422566 is a wasteful number, since it uses less digits than its factorization.

66522422566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446139646.

The product of its digits is 2073600, while the sum is 46.

The spelling of 66522422566 in words is "sixty-six billion, five hundred twenty-two million, four hundred twenty-two thousand, five hundred sixty-six".