85171751898 has 48 divisors (see below), whose sum is σ = 180174084480. Its totient is φ = 26828298112.

The previous prime is 85171751857. The next prime is 85171751909. The reversal of 85171751898 is 89815717158.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57598 + ... + 416726.

It is an arithmetic number, because the mean of its divisors is an integer number (3753626760).

Almost surely, 2^85171751898 is an apocalyptic number.

85171751898 is an abundant number, since it is smaller than the sum of its proper divisors (95002332582).

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

85171751898 is a wasteful number, since it uses less digits than its factorization.

85171751898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359239 (or 359210 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 60.

The spelling of 85171751898 in words is "eighty-five billion, one hundred seventy-one million, seven hundred fifty-one thousand, eight hundred ninety-eight".