866786485114857 has 16 divisors (see below), whose sum is σ = 1193165264950272. Its totient is φ = 559296217918080.

The previous prime is 866786485114787. The next prime is 866786485114859. The reversal of 866786485114857 is 758411584687668.

866786485114857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 866786485114857 - 2⁷ = 866786485114729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866786485114857.

It is not an unprimeable number, because it can be changed into a prime (866786485114859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20442092028 + ... + 20442134429.

It is an arithmetic number, because the mean of its divisors is an integer number (74572829059392).

Almost surely, 2^{866786485114857} is an apocalyptic number.

It is an amenable number.

866786485114857 is a deficient number, since it is larger than the sum of its proper divisors (326378779835415).

866786485114857 is a wasteful number, since it uses less digits than its factorization.

866786485114857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40884226688.

The product of its digits is 17340825600, while the sum is 84.

The spelling of 866786485114857 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred eighty-five million, one hundred fourteen thousand, eight hundred fifty-seven".