102166015849 has 2 divisors, whose sum is σ = 102166015850. Its totient is φ = 102166015848.

The previous prime is 102166015823. The next prime is 102166015867. The reversal of 102166015849 is 948510661201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79566305625 + 22599710224 = 282075^2 + 150332^2 .

It is a cyclic number.

It is not a de Polignac number, because 102166015849 - 2²⁹ = 101629144937 is a prime.

It is not a weakly prime, because it can be changed into another prime (102166015649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51083007924 + 51083007925.

It is an arithmetic number, because the mean of its divisors is an integer number (51083007925).

Almost surely, 2^102166015849 is an apocalyptic number.

It is an amenable number.

102166015849 is a deficient number, since it is larger than the sum of its proper divisors (1).

102166015849 is an equidigital number, since it uses as much as digits as its factorization.

102166015849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 102166015849 in words is "one hundred two billion, one hundred sixty-six million, fifteen thousand, eight hundred forty-nine".