866788547077703 has 2 divisors, whose sum is σ = 866788547077704. Its totient is φ = 866788547077702.

The previous prime is 866788547077637. The next prime is 866788547077741. The reversal of 866788547077703 is 307770745887668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866788547077703 - 2²⁰ = 866788546029127 is a prime.

It is a super-2 number, since 2×866788547077703² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866788547077603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433394273538851 + 433394273538852.

It is an arithmetic number, because the mean of its divisors is an integer number (433394273538852).

Almost surely, 2^{866788547077703} is an apocalyptic number.

866788547077703 is a deficient number, since it is larger than the sum of its proper divisors (1).

866788547077703 is an equidigital number, since it uses as much as digits as its factorization.

866788547077703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18587197440, while the sum is 83.

The spelling of 866788547077703 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred forty-seven million, seventy-seven thousand, seven hundred three".