866763551215156 has 24 divisors (see below), whose sum is σ = 1793303899067520. Its totient is φ = 358660779812832.

The previous prime is 866763551215129. The next prime is 866763551215231. The reversal of 866763551215156 is 651512155367668.

It is a junction number, because it is equal to n+sod(n) for n = 866763551215091 and 866763551215100.

It is a congruent number.

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, 533721397720 + ... + 533721399343.

It is an arithmetic number, because the mean of its divisors is an integer number (74720995794480).

Almost surely, 2^{866763551215156} is an apocalyptic number.

It is an amenable number.

866763551215156 is an abundant number, since it is smaller than the sum of its proper divisors (926540347852364).

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

866763551215156 is a wasteful number, since it uses less digits than its factorization.

866763551215156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067442797103 (or 1067442797101 counting only the distinct ones).

The product of its digits is 272160000, while the sum is 67.

The spelling of 866763551215156 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, five hundred fifty-one million, two hundred fifteen thousand, one hundred fifty-six".