102728437171 has 4 divisors (see below), whose sum is σ = 102730058152. Its totient is φ = 102726816192.

The previous prime is 102728437151. The next prime is 102728437177. The reversal of 102728437171 is 171734827201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171734827201 = 7 ⋅24533546743.

It is a cyclic number.

It is not a de Polignac number, because 102728437171 - 2⁹ = 102728436659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102728437177) 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, 711390 + ... + 843523.

It is an arithmetic number, because the mean of its divisors is an integer number (25682514538).

Almost surely, 2^102728437171 is an apocalyptic number.

102728437171 is a deficient number, since it is larger than the sum of its proper divisors (1620981).

102728437171 is an equidigital number, since it uses as much as digits as its factorization.

102728437171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620980.

The product of its (nonzero) digits is 131712, while the sum is 43.

The spelling of 102728437171 in words is "one hundred two billion, seven hundred twenty-eight million, four hundred thirty-seven thousand, one hundred seventy-one".