65876667856 has 20 divisors (see below), whose sum is σ = 128240960704. Its totient is φ = 32782226400.

The previous prime is 65876667821. The next prime is 65876667859.

65876667856 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65876667859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9753240 + ... + 9759991.

Almost surely, 2^65876667856 is an apocalyptic number.

It is an amenable number.

65876667856 is a deficient number, since it is larger than the sum of its proper divisors (62364292848).

65876667856 is a wasteful number, since it uses less digits than its factorization.

65876667856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19513450 (or 19513444 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 70.

The spelling of 65876667856 in words is "sixty-five billion, eight hundred seventy-six million, six hundred sixty-seven thousand, eight hundred fifty-six".