66700122056 has 16 divisors (see below), whose sum is σ = 125215070940. Its totient is φ = 33309436480.

The previous prime is 66700122043. The next prime is 66700122059. The reversal of 66700122056 is 65022100766.

It can be written as a sum of positive squares in 2 ways, for example, as 65467409956 + 1232712100 = 255866^2 + 35110^2 .

It is not an unprimeable number, because it can be changed into a prime (66700122059) 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 3 ways as a sum of consecutive naturals, for example, 5071091 + ... + 5084226.

Almost surely, 2^66700122056 is an apocalyptic number.

It is an amenable number.

66700122056 is a deficient number, since it is larger than the sum of its proper divisors (58514948884).

66700122056 is a wasteful number, since it uses less digits than its factorization.

66700122056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156144 (or 10156140 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 66700122056 in words is "sixty-six billion, seven hundred million, one hundred twenty-two thousand, fifty-six".