66107565708111 has 6 divisors (see below), whose sum is σ = 95488706022840. Its totient is φ = 44071710472068.

The previous prime is 66107565708089. The next prime is 66107565708133. The reversal of 66107565708111 is 11180756570166.

66107565708111 is a `hidden beast` number, since 6 + 6 + 1 + 0 + 7 + 56 + 570 + 8 + 1 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (66107565708089) and next prime (66107565708133).

It is not a de Polignac number, because 66107565708111 - 2⁶ = 66107565708047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66107565706111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3672642539331 + ... + 3672642539348.

It is an arithmetic number, because the mean of its divisors is an integer number (15914784337140).

Almost surely, 2^{66107565708111} is an apocalyptic number.

66107565708111 is a deficient number, since it is larger than the sum of its proper divisors (29381140314729).

66107565708111 is a wasteful number, since it uses less digits than its factorization.

66107565708111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345285078685 (or 7345285078682 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 54.

The spelling of 66107565708111 in words is "sixty-six trillion, one hundred seven billion, five hundred sixty-five million, seven hundred eight thousand, one hundred eleven".