85812671844 has 27 divisors (see below), whose sum is σ = 216919807923. Its totient is φ = 28603638072.

The previous prime is 85812671831. The next prime is 85812671873. The reversal of 85812671844 is 44817621858.

The square root of 85812671844 is 292938.

It is a perfect power (a square), and thus also a powerful number.

85812671844 is a `hidden beast` number, since 8 + 581 + 2 + 6 + 7 + 18 + 44 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1733217 + ... + 1782039.

Almost surely, 2^85812671844 is an apocalyptic number.

85812671844 is the 292938-th square number.

It is an amenable number.

85812671844 is an abundant number, since it is smaller than the sum of its proper divisors (131107136079).

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

85812671844 is an frugal number, since it uses more digits than its factorization.

85812671844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97656 (or 48828 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The spelling of 85812671844 in words is "eighty-five billion, eight hundred twelve million, six hundred seventy-one thousand, eight hundred forty-four".