172708242085 has 8 divisors (see below), whose sum is σ = 207294098976. Its totient is φ = 138137121360.

The previous prime is 172708242061. The next prime is 172708242097. The reversal of 172708242085 is 580242807271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172708242085 - 2²⁹ = 172171371173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3658239 + ... + 3705148.

It is an arithmetic number, because the mean of its divisors is an integer number (25911762372).

Almost surely, 2^172708242085 is an apocalyptic number.

It is an amenable number.

172708242085 is a deficient number, since it is larger than the sum of its proper divisors (34585856891).

172708242085 is an equidigital number, since it uses as much as digits as its factorization.

172708242085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7368083.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 172708242085 in words is "one hundred seventy-two billion, seven hundred eight million, two hundred forty-two thousand, eighty-five".