866788526364477 has 16 divisors (see below), whose sum is σ = 1224040706646912. Its totient is φ = 543716529477120.

The previous prime is 866788526364473. The next prime is 866788526364487. The reversal of 866788526364477 is 774463625887668.

It is not a de Polignac number, because 866788526364477 - 2² = 866788526364473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866788526364393 and 866788526364402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866788526364473) 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, 2355770224 + ... + 2356138137.

It is an arithmetic number, because the mean of its divisors is an integer number (76502544165432).

Almost surely, 2^{866788526364477} is an apocalyptic number.

It is an amenable number.

866788526364477 is a deficient number, since it is larger than the sum of its proper divisors (357252180282435).

866788526364477 is a wasteful number, since it uses less digits than its factorization.

866788526364477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711911988.

The product of its digits is 109247201280, while the sum is 87.

The spelling of 866788526364477 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, three hundred sixty-four thousand, four hundred seventy-seven".