868735666537868 has 12 divisors (see below), whose sum is σ = 1522615574817120. Its totient is φ = 433702645161552.

The previous prime is 868735666537819. The next prime is 868735666537957.

868735666537868 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166297023908 + ... + 166297029131.

It is an arithmetic number, because the mean of its divisors is an integer number (126884631234760).

Almost surely, 2^{868735666537868} is an apocalyptic number.

It is an amenable number.

868735666537868 is a deficient number, since it is larger than the sum of its proper divisors (653879908279252).

868735666537868 is a wasteful number, since it uses less digits than its factorization.

868735666537868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332594053696 (or 332594053694 counting only the distinct ones).

The product of its digits is 351151718400, while the sum is 92.

The spelling of 868735666537868 in words is "eight hundred sixty-eight trillion, seven hundred thirty-five billion, six hundred sixty-six million, five hundred thirty-seven thousand, eight hundred sixty-eight".