66667847101 has 2 divisors, whose sum is σ = 66667847102. Its totient is φ = 66667847100.

The previous prime is 66667847027. The next prime is 66667847153. The reversal of 66667847101 is 10174876666.

It is an a-pointer prime, because the next prime (66667847153) can be obtained adding 66667847101 to its sum of digits (52).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43150091076 + 23517756025 = 207726^2 + 153355^2 .

It is a cyclic number.

It is not a de Polignac number, because 66667847101 - 2²⁹ = 66130976189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66667844101) by changing a digit.

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 as a sum of consecutive naturals, namely, 33333923550 + 33333923551.

It is an arithmetic number, because the mean of its divisors is an integer number (33333923551).

Almost surely, 2^66667847101 is an apocalyptic number.

It is an amenable number.

66667847101 is a deficient number, since it is larger than the sum of its proper divisors (1).

66667847101 is an equidigital number, since it uses as much as digits as its factorization.

66667847101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 66667847101 in words is "sixty-six billion, six hundred sixty-seven million, eight hundred forty-seven thousand, one hundred one".