84171195125 has 8 divisors (see below), whose sum is σ = 105045651672. Its totient is φ = 67336956000.

The previous prime is 84171195103. The next prime is 84171195127. The reversal of 84171195125 is 52159117148.

It can be written as a sum of positive squares in 4 ways, for example, as 1720092676 + 82451102449 = 41474^2 + 287143^2 .

It is not a de Polignac number, because 84171195125 - 2²⁰ = 84170146549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84171195127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336684656 + ... + 336684905.

It is an arithmetic number, because the mean of its divisors is an integer number (13130706459).

Almost surely, 2^84171195125 is an apocalyptic number.

It is an amenable number.

84171195125 is a deficient number, since it is larger than the sum of its proper divisors (20874456547).

84171195125 is an equidigital number, since it uses as much as digits as its factorization.

84171195125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673369576 (or 673369566 counting only the distinct ones).

The product of its digits is 100800, while the sum is 44.

The spelling of 84171195125 in words is "eighty-four billion, one hundred seventy-one million, one hundred ninety-five thousand, one hundred twenty-five".