66644622204022 has 16 divisors (see below), whose sum is σ = 103141878915600. Its totient is φ = 32275689989760.

The previous prime is 66644622204019. The next prime is 66644622204023. The reversal of 66644622204022 is 22040222644666.

66644622204022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66644622204023) 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, 2923511247 + ... + 2923534042.

It is an arithmetic number, because the mean of its divisors is an integer number (6446367432225).

Almost surely, 2^{66644622204022} is an apocalyptic number.

66644622204022 is a deficient number, since it is larger than the sum of its proper divisors (36497256711578).

66644622204022 is a wasteful number, since it uses less digits than its factorization.

66644622204022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847045471.

The product of its (nonzero) digits is 2654208, while the sum is 46.

Adding to 66644622204022 its reverse (22040222644666), we get a palindrome (88684844848688).

It can be divided in two parts, 6664462 and 2204022, that added together give a square (8868484 = 2978²).

The spelling of 66644622204022 in words is "sixty-six trillion, six hundred forty-four billion, six hundred twenty-two million, two hundred four thousand, twenty-two".