866112249798 has 32 divisors (see below), whose sum is σ = 1924775781600. Its totient is φ = 288691799328.

The previous prime is 866112249781. The next prime is 866112249803. The reversal of 866112249798 is 897942211668.

866112249798 is a `hidden beast` number, since 8 + 6 + 611 + 2 + 2 + 4 + 9 + 7 + 9 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987108 + ... + 1645176.

It is an arithmetic number, because the mean of its divisors is an integer number (60149243175).

Almost surely, 2^866112249798 is an apocalyptic number.

866112249798 is an abundant number, since it is smaller than the sum of its proper divisors (1058663531802).

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

866112249798 is a wasteful number, since it uses less digits than its factorization.

866112249798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682453 (or 682447 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 866112249798 in words is "eight hundred sixty-six billion, one hundred twelve million, two hundred forty-nine thousand, seven hundred ninety-eight".