866824773426120 has 64 divisors (see below), whose sum is σ = 2637100719181440. Its totient is φ = 227897593011200.

The previous prime is 866824773426047. The next prime is 866824773426127. The reversal of 866824773426120 is 21624377428668.

It is not an unprimeable number, because it can be changed into a prime (866824773426127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50869989921 + ... + 50870006960.

It is an arithmetic number, because the mean of its divisors is an integer number (41204698737210).

Almost surely, 2^{866824773426120} is an apocalyptic number.

It is an amenable number.

866824773426120 is an abundant number, since it is smaller than the sum of its proper divisors (1770275945755320).

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

866824773426120 is a wasteful number, since it uses less digits than its factorization.

866824773426120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101739996966 (or 101739996962 counting only the distinct ones).

The product of its (nonzero) digits is 260112384, while the sum is 66.

The spelling of 866824773426120 in words is "eight hundred sixty-six trillion, eight hundred twenty-four billion, seven hundred seventy-three million, four hundred twenty-six thousand, one hundred twenty".