102166666369 has 2 divisors, whose sum is σ = 102166666370. Its totient is φ = 102166666368.

The previous prime is 102166666331. The next prime is 102166666387. The reversal of 102166666369 is 963666661201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95768586225 + 6398080144 = 309465^2 + 79988^2 .

It is a cyclic number.

It is not a de Polignac number, because 102166666369 - 2¹⁵ = 102166633601 is a prime.

It is a super-2 number, since 2×102166666369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102166666309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51083333184 + 51083333185.

It is an arithmetic number, because the mean of its divisors is an integer number (51083333185).

Almost surely, 2^102166666369 is an apocalyptic number.

It is an amenable number.

102166666369 is a deficient number, since it is larger than the sum of its proper divisors (1).

102166666369 is an equidigital number, since it uses as much as digits as its factorization.

102166666369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 102166666369 in words is "one hundred two billion, one hundred sixty-six million, six hundred sixty-six thousand, three hundred sixty-nine".