102159192217 has 4 divisors (see below), whose sum is σ = 102329174836. Its totient is φ = 101989209600.

The previous prime is 102159192211. The next prime is 102159192263. The reversal of 102159192217 is 712291951201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712291951201 = 75403 ⋅9446467.

It can be written as a sum of positive squares in 2 ways, for example, as 94221985936 + 7937206281 = 306956^2 + 89091^2 .

It is a cyclic number.

It is not a de Polignac number, because 102159192217 - 2³ = 102159192209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102159192217.

It is not an unprimeable number, because it can be changed into a prime (102159192211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84990408 + ... + 84991609.

It is an arithmetic number, because the mean of its divisors is an integer number (25582293709).

Almost surely, 2^102159192217 is an apocalyptic number.

It is an amenable number.

102159192217 is a deficient number, since it is larger than the sum of its proper divisors (169982619).

102159192217 is an equidigital number, since it uses as much as digits as its factorization.

102159192217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169982618.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 102159192217 in words is "one hundred two billion, one hundred fifty-nine million, one hundred ninety-two thousand, two hundred seventeen".