85171363409 has 8 divisors (see below), whose sum is σ = 92934481728. Its totient is φ = 77411622960.

The previous prime is 85171363373. The next prime is 85171363471. The reversal of 85171363409 is 90436317158.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 85171363409 - 2¹⁶ = 85171297873 is a prime.

It is a super-2 number, since 2×85171363409² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85171363309) 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, 791597 + ... + 892730.

It is an arithmetic number, because the mean of its divisors is an integer number (11616810216).

Almost surely, 2^85171363409 is an apocalyptic number.

It is an amenable number.

85171363409 is a deficient number, since it is larger than the sum of its proper divisors (7763118319).

85171363409 is a wasteful number, since it uses less digits than its factorization.

85171363409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688935.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 85171363409 in words is "eighty-five billion, one hundred seventy-one million, three hundred sixty-three thousand, four hundred nine".