66131086067 has 2 divisors, whose sum is σ = 66131086068. Its totient is φ = 66131086066.

The previous prime is 66131086027. The next prime is 66131086069. The reversal of 66131086067 is 76068013166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66131086067 - 2⁶ = 66131086003 is a prime.

Together with 66131086069, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66131086069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33065543033 + 33065543034.

It is an arithmetic number, because the mean of its divisors is an integer number (33065543034).

Almost surely, 2^66131086067 is an apocalyptic number.

66131086067 is a deficient number, since it is larger than the sum of its proper divisors (1).

66131086067 is an equidigital number, since it uses as much as digits as its factorization.

66131086067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 66131086067 in words is "sixty-six billion, one hundred thirty-one million, eighty-six thousand, sixty-seven".