85417072171 has 8 divisors (see below), whose sum is σ = 85742864384. Its totient is φ = 85091889960.

The previous prime is 85417072157. The next prime is 85417072183. The reversal of 85417072171 is 17127071458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85417072171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85417072121) by changing a digit.

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, 129076 + ... + 433006.

It is an arithmetic number, because the mean of its divisors is an integer number (10717858048).

Almost surely, 2^85417072171 is an apocalyptic number.

85417072171 is a deficient number, since it is larger than the sum of its proper divisors (325792213).

85417072171 is a wasteful number, since it uses less digits than its factorization.

85417072171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305001.

The product of its (nonzero) digits is 109760, while the sum is 43.

The spelling of 85417072171 in words is "eighty-five billion, four hundred seventeen million, seventy-two thousand, one hundred seventy-one".