66959333117811 has 6 divisors (see below), whose sum is σ = 96719036725740. Its totient is φ = 44639555411868.

The previous prime is 66959333117779. The next prime is 66959333117813. The reversal of 66959333117811 is 11871133395966.

66959333117811 is a `hidden beast` number, since 6 + 6 + 9 + 593 + 3 + 31 + 1 + 7 + 8 + 1 + 1 = 666.

It is not a de Polignac number, because 66959333117811 - 2⁵ = 66959333117779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66959333117813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3719962950981 + ... + 3719962950998.

It is an arithmetic number, because the mean of its divisors is an integer number (16119839454290).

Almost surely, 2^{66959333117811} is an apocalyptic number.

66959333117811 is a deficient number, since it is larger than the sum of its proper divisors (29759703607929).

66959333117811 is a wasteful number, since it uses less digits than its factorization.

66959333117811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439925901985 (or 7439925901982 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The spelling of 66959333117811 in words is "sixty-six trillion, nine hundred fifty-nine billion, three hundred thirty-three million, one hundred seventeen thousand, eight hundred eleven".