866786026508470 has 16 divisors (see below), whose sum is σ = 1560215266146720. Its totient is φ = 346714317618624.

The previous prime is 866786026508387. The next prime is 866786026508477. The reversal of 866786026508470 is 74805620687668.

It is a junction number, because it is equal to n+sod(n) for n = 866786026508393 and 866786026508402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866786026508477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37357399 + ... + 55938781.

It is an arithmetic number, because the mean of its divisors is an integer number (97513454134170).

Almost surely, 2^{866786026508470} is an apocalyptic number.

866786026508470 is a deficient number, since it is larger than the sum of its proper divisors (693429239638250).

866786026508470 is a wasteful number, since it uses less digits than its factorization.

866786026508470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23246199.

The product of its (nonzero) digits is 1300561920, while the sum is 73.

The spelling of 866786026508470 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, twenty-six million, five hundred eight thousand, four hundred seventy".