866654868888 has 144 divisors (see below), whose sum is σ = 2479149855000. Its totient is φ = 273468234240.

The previous prime is 866654868853. The next prime is 866654868901. The reversal of 866654868888 is 888868456668.

866654868888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35362863 + ... + 35387361.

Almost surely, 2^866654868888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866654868888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239574927500).

866654868888 is an abundant number, since it is smaller than the sum of its proper divisors (1612494986112).

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

866654868888 is a wasteful number, since it uses less digits than its factorization.

866654868888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25910 (or 25884 counting only the distinct ones).

The product of its digits is 6794772480, while the sum is 81.

The spelling of 866654868888 in words is "eight hundred sixty-six billion, six hundred fifty-four million, eight hundred sixty-eight thousand, eight hundred eighty-eight".