812000470085 has 12 divisors (see below), whose sum is σ = 1133486370828. Its totient is φ = 556800322176.

The previous prime is 812000470063. The next prime is 812000470091. The reversal of 812000470085 is 580074000218.

It can be written as a sum of positive squares in 2 ways, for example, as 136392091969 + 675608378116 = 369313^2 + 821954^2 .

It is not a de Polignac number, because 812000470085 - 2¹⁴ = 812000453701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

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, 1657143572 + ... + 1657144061.

It is an arithmetic number, because the mean of its divisors is an integer number (94457197569).

Almost surely, 2^812000470085 is an apocalyptic number.

It is an amenable number.

812000470085 is a deficient number, since it is larger than the sum of its proper divisors (321485900743).

812000470085 is a wasteful number, since it uses less digits than its factorization.

812000470085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314287652 (or 3314287645 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 812000470085 in words is "eight hundred twelve billion, four hundred seventy thousand, eighty-five".