102809348269 has 4 divisors (see below), whose sum is σ = 103377355900. Its totient is φ = 102241340640.

The previous prime is 102809348183. The next prime is 102809348273. The reversal of 102809348269 is 962843908201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26846822500 + 75962525769 = 163850^2 + 275613^2 .

It is a cyclic number.

It is not a de Polignac number, because 102809348269 - 2¹¹ = 102809346221 is a prime.

It is a super-2 number, since 2×102809348269² (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 (102809348069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284003544 + ... + 284003905.

It is an arithmetic number, because the mean of its divisors is an integer number (25844338975).

Almost surely, 2^102809348269 is an apocalyptic number.

It is an amenable number.

102809348269 is a deficient number, since it is larger than the sum of its proper divisors (568007631).

102809348269 is an equidigital number, since it uses as much as digits as its factorization.

102809348269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568007630.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 102809348269 in words is "one hundred two billion, eight hundred nine million, three hundred forty-eight thousand, two hundred sixty-nine".