85831487812 has 12 divisors (see below), whose sum is σ = 171662975680. Its totient is φ = 36784923336.

The previous prime is 85831487809. The next prime is 85831487827. The reversal of 85831487812 is 21878413858.

85831487812 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532705112 + ... + 1532705167.

Almost surely, 2^85831487812 is an apocalyptic number.

It is an amenable number.

85831487812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

85831487812 is a wasteful number, since it uses less digits than its factorization.

85831487812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065410290 (or 3065410288 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 55.

The spelling of 85831487812 in words is "eighty-five billion, eight hundred thirty-one million, four hundred eighty-seven thousand, eight hundred twelve".