66601112022 has 12 divisors (see below), whose sum is σ = 144302409420. Its totient is φ = 22200370668.

The previous prime is 66601112009. The next prime is 66601112027. The reversal of 66601112022 is 22021110666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66601112027) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1850030872 + ... + 1850030907.

It is an arithmetic number, because the mean of its divisors is an integer number (12025200785).

Almost surely, 2^66601112022 is an apocalyptic number.

66601112022 is an abundant number, since it is smaller than the sum of its proper divisors (77701297398).

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

66601112022 is a wasteful number, since it uses less digits than its factorization.

66601112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700061787 (or 3700061784 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 66601112022 its reverse (22021110666), we get a palindrome (88622222688).

The spelling of 66601112022 in words is "sixty-six billion, six hundred one million, one hundred twelve thousand, twenty-two".