66422604206 has 16 divisors (see below), whose sum is σ = 116290031616. Its totient is φ = 27861152856.

The previous prime is 66422604167. The next prime is 66422604217. The reversal of 66422604206 is 60240622466.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66422604206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50472446 + ... + 50473761.

It is an arithmetic number, because the mean of its divisors is an integer number (7268126976).

Almost surely, 2^66422604206 is an apocalyptic number.

66422604206 is a deficient number, since it is larger than the sum of its proper divisors (49867427410).

66422604206 is a wasteful number, since it uses less digits than its factorization.

66422604206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100946263.

The product of its (nonzero) digits is 165888, while the sum is 38.

It can be divided in two parts, 6642260 and 4206, that added together give a palindrome (6646466).

The spelling of 66422604206 in words is "sixty-six billion, four hundred twenty-two million, six hundred four thousand, two hundred six".