102816217173 has 4 divisors (see below), whose sum is σ = 137088289568. Its totient is φ = 68544144780.

The previous prime is 102816217129. The next prime is 102816217187. The reversal of 102816217173 is 371712618201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102816217173 - 2⁶ = 102816217109 is a prime.

It is a super-2 number, since 2×102816217173² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102816212173) 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, 17136036193 + ... + 17136036198.

It is an arithmetic number, because the mean of its divisors is an integer number (34272072392).

Almost surely, 2^102816217173 is an apocalyptic number.

It is an amenable number.

102816217173 is a deficient number, since it is larger than the sum of its proper divisors (34272072395).

102816217173 is an equidigital number, since it uses as much as digits as its factorization.

102816217173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34272072394.

The product of its (nonzero) digits is 28224, while the sum is 39.

The spelling of 102816217173 in words is "one hundred two billion, eight hundred sixteen million, two hundred seventeen thousand, one hundred seventy-three".