866788524668452 has 12 divisors (see below), whose sum is σ = 1516895134988940. Its totient is φ = 433389914671616.

The previous prime is 866788524668431. The next prime is 866788524668543. The reversal of 866788524668452 is 254866425887668.

866788524668452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 140833853614336 + 725954671054116 = 11867344^2 + 26943546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 866788524668452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086467053 + ... + 1087264564.

It is an arithmetic number, because the mean of its divisors is an integer number (126407927915745).

Almost surely, 2^{866788524668452} is an apocalyptic number.

It is an amenable number.

866788524668452 is a deficient number, since it is larger than the sum of its proper divisors (650106610320488).

866788524668452 is a wasteful number, since it uses less digits than its factorization.

866788524668452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173831310 (or 2173831308 counting only the distinct ones).

The product of its digits is 59454259200, while the sum is 85.

The spelling of 866788524668452 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-four million, six hundred sixty-eight thousand, four hundred fifty-two".