868538664266 has 16 divisors (see below), whose sum is σ = 1603455995904. Its totient is φ = 343597713264.

The previous prime is 868538664247. The next prime is 868538664313. The reversal of 868538664266 is 662466835868.

It is a super-2 number, since 2×868538664266² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 868538664196 and 868538664205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2386095050 + ... + 2386095413.

It is an arithmetic number, because the mean of its divisors is an integer number (100215999744).

Almost surely, 2^868538664266 is an apocalyptic number.

868538664266 is a deficient number, since it is larger than the sum of its proper divisors (734917331638).

868538664266 is a wasteful number, since it uses less digits than its factorization.

868538664266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4772190485.

The product of its digits is 477757440, while the sum is 68.

The spelling of 868538664266 in words is "eight hundred sixty-eight billion, five hundred thirty-eight million, six hundred sixty-four thousand, two hundred sixty-six".