66311157066107 has 2 divisors, whose sum is σ = 66311157066108. Its totient is φ = 66311157066106.

The previous prime is 66311157066073. The next prime is 66311157066139. The reversal of 66311157066107 is 70166075111366.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66311157066107 - 2⁸ = 66311157065851 is a prime.

It is not a weakly prime, because it can be changed into another prime (66311157066307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33155578533053 + 33155578533054.

It is an arithmetic number, because the mean of its divisors is an integer number (33155578533054).

Almost surely, 2^{66311157066107} is an apocalyptic number.

66311157066107 is a deficient number, since it is larger than the sum of its proper divisors (1).

66311157066107 is an equidigital number, since it uses as much as digits as its factorization.

66311157066107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 66311157066107 in words is "sixty-six trillion, three hundred eleven billion, one hundred fifty-seven million, sixty-six thousand, one hundred seven".