65864366346856 has 32 divisors (see below), whose sum is σ = 153968648604480. Its totient is φ = 25661441433600.

The previous prime is 65864366346841. The next prime is 65864366346929.

65864366346856 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×65864366346856² (a number of 28 digits) contains 22 as substring.

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, 53461335705 + ... + 53461336936.

It is an arithmetic number, because the mean of its divisors is an integer number (4811520268890).

Almost surely, 2^{65864366346856} is an apocalyptic number.

It is an amenable number.

65864366346856 is an abundant number, since it is smaller than the sum of its proper divisors (88104282257624).

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

65864366346856 is a wasteful number, since it uses less digits than its factorization.

65864366346856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106922672665 (or 106922672661 counting only the distinct ones).

The product of its digits is 10749542400, while the sum is 76.

The spelling of 65864366346856 in words is "sixty-five trillion, eight hundred sixty-four billion, three hundred sixty-six million, three hundred forty-six thousand, eight hundred fifty-six".