866786254033403 has 16 divisors (see below), whose sum is σ = 957556354752000. Its totient is φ = 778011418373280.

The previous prime is 866786254033387. The next prime is 866786254033423. The reversal of 866786254033403 is 304330452687668.

866786254033403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 866786254033403 - 2⁴ = 866786254033387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866786254033403.

It is not an unprimeable number, because it can be changed into a prime (866786254033423) 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, 825340673 + ... + 826390221.

It is an arithmetic number, because the mean of its divisors is an integer number (59847272172000).

Almost surely, 2^{866786254033403} is an apocalyptic number.

866786254033403 is a deficient number, since it is larger than the sum of its proper divisors (90770100718597).

866786254033403 is a wasteful number, since it uses less digits than its factorization.

866786254033403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000002.

The product of its (nonzero) digits is 418037760, while the sum is 65.

The spelling of 866786254033403 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, two hundred fifty-four million, thirty-three thousand, four hundred three".