85820865072 has 40 divisors (see below), whose sum is σ = 221841549744. Its totient is φ = 28589193984.

The previous prime is 85820865059. The next prime is 85820865083. The reversal of 85820865072 is 27056802858.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476803 + ... + 631650.

Almost surely, 2^85820865072 is an apocalyptic number.

It is an amenable number.

85820865072 is an abundant number, since it is smaller than the sum of its proper divisors (136020684672).

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

85820865072 is a wasteful number, since it uses less digits than its factorization.

85820865072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110077 (or 1110071 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 85820865072 in words is "eighty-five billion, eight hundred twenty million, eight hundred sixty-five thousand, seventy-two".