866330877042 has 48 divisors (see below), whose sum is σ = 1987583902200. Its totient is φ = 271773812736.

The previous prime is 866330877001. The next prime is 866330877043. The reversal of 866330877042 is 240778033668.

It can be written as a sum of positive squares in 4 ways, for example, as 860814695601 + 5516181441 = 927801^2 + 74271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 866330877042.

It is not an unprimeable number, because it can be changed into a prime (866330877043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5675334 + ... + 5825982.

Almost surely, 2^866330877042 is an apocalyptic number.

866330877042 is an abundant number, since it is smaller than the sum of its proper divisors (1121253025158).

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

866330877042 is a wasteful number, since it uses less digits than its factorization.

866330877042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169467 (or 169464 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 866330877042 in words is "eight hundred sixty-six billion, three hundred thirty million, eight hundred seventy-seven thousand, forty-two".