85801029612 has 24 divisors (see below), whose sum is σ = 200210390016. Its totient is φ = 28599202128.

The previous prime is 85801029571. The next prime is 85801029617. The reversal of 85801029612 is 21692010858.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85801029617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204453 + ... + 461955.

It is an arithmetic number, because the mean of its divisors is an integer number (8342099584).

Almost surely, 2^85801029612 is an apocalyptic number.

It is an amenable number.

85801029612 is an abundant number, since it is smaller than the sum of its proper divisors (114409360404).

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

85801029612 is a wasteful number, since it uses less digits than its factorization.

85801029612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285277 (or 285275 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 85801029612 in words is "eighty-five billion, eight hundred one million, twenty-nine thousand, six hundred twelve".