866723098864 has 40 divisors (see below), whose sum is σ = 1919301229280. Its totient is φ = 371427856128.

The previous prime is 866723098841. The next prime is 866723098873. The reversal of 866723098864 is 468890327668.

866723098864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 866723098864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470082 + ... + 1973470.

It is an arithmetic number, because the mean of its divisors is an integer number (47982530732).

Almost surely, 2^866723098864 is an apocalyptic number.

It is an amenable number.

866723098864 is an abundant number, since it is smaller than the sum of its proper divisors (1052578130416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866723098864 is a wasteful number, since it uses less digits than its factorization.

866723098864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518777 (or 518771 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 67.

The spelling of 866723098864 in words is "eight hundred sixty-six billion, seven hundred twenty-three million, ninety-eight thousand, eight hundred sixty-four".