85207417856 has 132 divisors (see below), whose sum is σ = 189003178224. Its totient is φ = 38362705920.

The previous prime is 85207417829. The next prime is 85207417907. The reversal of 85207417856 is 65871470258.

It is a junction number, because it is equal to n+sod(n) for n = 85207417798 and 85207417807.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13254515 + ... + 13260941.

Almost surely, 2^85207417856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85207417856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94501589112).

85207417856 is an abundant number, since it is smaller than the sum of its proper divisors (103795760368).

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

85207417856 is a wasteful number, since it uses less digits than its factorization.

85207417856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576 (or 6547 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 85207417856 in words is "eighty-five billion, two hundred seven million, four hundred seventeen thousand, eight hundred fifty-six".