85684628856 has 32 divisors (see below), whose sum is σ = 215449799760. Its totient is φ = 28396445952.

The previous prime is 85684628851. The next prime is 85684628857. The reversal of 85684628856 is 65882648658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85684628851) 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, 10314325 + ... + 10322628.

Almost surely, 2^85684628856 is an apocalyptic number.

It is an amenable number.

85684628856 is an abundant number, since it is smaller than the sum of its proper divisors (129765170904).

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

85684628856 is a wasteful number, since it uses less digits than its factorization.

85684628856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20637135 (or 20637131 counting only the distinct ones).

The product of its digits is 176947200, while the sum is 66.

The spelling of 85684628856 in words is "eighty-five billion, six hundred eighty-four million, six hundred twenty-eight thousand, eight hundred fifty-six".