66822065841 has 16 divisors (see below), whose sum is σ = 92002272768. Its totient is φ = 43095955200.

The previous prime is 66822065839. The next prime is 66822065929. The reversal of 66822065841 is 14856022866.

It is not a de Polignac number, because 66822065841 - 2¹ = 66822065839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66822065441) 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 15 ways as a sum of consecutive naturals, for example, 145411 + ... + 393431.

It is an arithmetic number, because the mean of its divisors is an integer number (5750142048).

Almost surely, 2^66822065841 is an apocalyptic number.

It is an amenable number.

66822065841 is a deficient number, since it is larger than the sum of its proper divisors (25180206927).

66822065841 is a wasteful number, since it uses less digits than its factorization.

66822065841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250952.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 66822065841 in words is "sixty-six billion, eight hundred twenty-two million, sixty-five thousand, eight hundred forty-one".