66311157066122 has 32 divisors (see below), whose sum is σ = 100259566981200. Its totient is φ = 32891990496768.

The previous prime is 66311157066107. The next prime is 66311157066139. The reversal of 66311157066122 is 22166075111366.

It is a happy number.

66311157066122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3521999136601 + 62789157929521 = 1876699^2 + 7923961^2 .

It is an unprimeable number.

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, 1395618638 + ... + 1395666150.

Almost surely, 2^{66311157066122} is an apocalyptic number.

66311157066122 is a deficient number, since it is larger than the sum of its proper divisors (33948409915078).

66311157066122 is a wasteful number, since it uses less digits than its factorization.

66311157066122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54650.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 66311157066122 in words is "sixty-six trillion, three hundred eleven billion, one hundred fifty-seven million, sixty-six thousand, one hundred twenty-two".