812071071806 has 32 divisors (see below), whose sum is σ = 1271249261568. Its totient is φ = 388624763520.

The previous prime is 812071071793. The next prime is 812071071841. The reversal of 812071071806 is 608170170218.

812071071806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3147701 + ... + 3395903.

It is an arithmetic number, because the mean of its divisors is an integer number (39726539424).

Almost surely, 2^812071071806 is an apocalyptic number.

812071071806 is a deficient number, since it is larger than the sum of its proper divisors (459178189762).

812071071806 is a wasteful number, since it uses less digits than its factorization.

812071071806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248816.

The product of its (nonzero) digits is 37632, while the sum is 41.

The spelling of 812071071806 in words is "eight hundred twelve billion, seventy-one million, seventy-one thousand, eight hundred six".