65850805856 has 72 divisors (see below), whose sum is σ = 145976994072. Its totient is φ = 29202060800.

The previous prime is 65850805843. The next prime is 65850805871.

65850805856 is nontrivially palindromic in base 10.

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, 48650 + ... + 366153.

It is an arithmetic number, because the mean of its divisors is an integer number (2027458251).

Almost surely, 2^65850805856 is an apocalyptic number.

It is an amenable number.

65850805856 is an abundant number, since it is smaller than the sum of its proper divisors (80126188216).

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

65850805856 is a wasteful number, since it uses less digits than its factorization.

65850805856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414876 (or 414857 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 56.

The spelling of 65850805856 in words is "sixty-five billion, eight hundred fifty million, eight hundred five thousand, eight hundred fifty-six".