866788526550055 has 32 divisors (see below), whose sum is σ = 1046233227600000. Its totient is φ = 689378792965632.

The previous prime is 866788526549987. The next prime is 866788526550173. The reversal of 866788526550055 is 550055625887668.

It is a happy number.

866788526550055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 866788526550055 - 2⁴³ = 857992433527847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6053047717 + ... + 6053190913.

It is an arithmetic number, because the mean of its divisors is an integer number (32694788362500).

Almost surely, 2^{866788526550055} is an apocalyptic number.

866788526550055 is a deficient number, since it is larger than the sum of its proper divisors (179444701049945).

866788526550055 is a wasteful number, since it uses less digits than its factorization.

866788526550055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148363.

The product of its (nonzero) digits is 4838400000, while the sum is 76.

The spelling of 866788526550055 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, five hundred fifty thousand, fifty-five".