866788805310604 has 24 divisors (see below), whose sum is σ = 1654780663576656. Its totient is φ = 393994426920000.

The previous prime is 866788805310601. The next prime is 866788805310611. The reversal of 866788805310604 is 406013508887668.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (866788805310601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25369554 + ... + 48756454.

It is an arithmetic number, because the mean of its divisors is an integer number (68949194315694).

Almost surely, 2^{866788805310604} is an apocalyptic number.

It is an amenable number.

866788805310604 is a deficient number, since it is larger than the sum of its proper divisors (787991858266052).

866788805310604 is a wasteful number, since it uses less digits than its factorization.

866788805310604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24229257 (or 24229255 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 70.

The spelling of 866788805310604 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, eight hundred five million, three hundred ten thousand, six hundred four".