85868173047870 has 24 divisors (see below), whose sum is σ = 223257249924696. Its totient is φ = 22898179479408.

The previous prime is 85868173047847. The next prime is 85868173047871. The reversal of 85868173047870 is 7874037186858.

It is a happy number.

85868173047870 is a `hidden beast` number, since 8 + 5 + 8 + 6 + 81 + 7 + 3 + 0 + 478 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85868173047871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477045405732 + ... + 477045405911.

It is an arithmetic number, because the mean of its divisors is an integer number (9302385413529).

Almost surely, 2^{85868173047870} is an apocalyptic number.

85868173047870 is an abundant number, since it is smaller than the sum of its proper divisors (137389076876826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85868173047870 is a wasteful number, since it uses less digits than its factorization.

85868173047870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954090811656 (or 954090811653 counting only the distinct ones).

The product of its (nonzero) digits is 505774080, while the sum is 72.

The spelling of 85868173047870 in words is "eighty-five trillion, eight hundred sixty-eight billion, one hundred seventy-three million, forty-seven thousand, eight hundred seventy".