102166666361 has 4 divisors (see below), whose sum is σ = 104927927652. Its totient is φ = 99405405072.

The previous prime is 102166666331. The next prime is 102166666369. The reversal of 102166666361 is 163666661201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163666661201 = 10529 ⋅15544369.

It can be written as a sum of positive squares in 2 ways, for example, as 81701647225 + 20465019136 = 285835^2 + 143056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102166666361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102166666369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380630590 + ... + 1380630663.

It is an arithmetic number, because the mean of its divisors is an integer number (26231981913).

Almost surely, 2^102166666361 is an apocalyptic number.

It is an amenable number.

102166666361 is a deficient number, since it is larger than the sum of its proper divisors (2761261291).

102166666361 is an equidigital number, since it uses as much as digits as its factorization.

102166666361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761261290.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 102166666361 in words is "one hundred two billion, one hundred sixty-six million, six hundred sixty-six thousand, three hundred sixty-one".