66211055622 has 24 divisors (see below), whose sum is σ = 143462216664. Its totient is φ = 22069593504.

The previous prime is 66211055611. The next prime is 66211055623. The reversal of 66211055622 is 22655011266.

66211055622 is a `hidden beast` number, since 6 + 6 + 21 + 1 + 0 + 5 + 5 + 622 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66211055623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 777313 + ... + 858275.

It is an arithmetic number, because the mean of its divisors is an integer number (5977592361).

Almost surely, 2^66211055622 is an apocalyptic number.

66211055622 is an abundant number, since it is smaller than the sum of its proper divisors (77251161042).

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

66211055622 is a wasteful number, since it uses less digits than its factorization.

66211055622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126404 (or 126401 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 66211055622 its reverse (22655011266), we get a palindrome (88866066888).

The spelling of 66211055622 in words is "sixty-six billion, two hundred eleven million, fifty-five thousand, six hundred twenty-two".