866788526551134 has 128 divisors (see below), whose sum is σ = 1983992338759680. Its totient is φ = 250027663894400.

The previous prime is 866788526551021. The next prime is 866788526551159. The reversal of 866788526551134 is 431155625887668.

866788526551134 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 63 ways as a sum of consecutive naturals, for example, 10847426809 + ... + 10847506715.

It is an arithmetic number, because the mean of its divisors is an integer number (15499940146560).

Almost surely, 2^{866788526551134} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866788526551134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991996169379840).

866788526551134 is an abundant number, since it is smaller than the sum of its proper divisors (1117203812208546).

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

866788526551134 is a wasteful number, since it uses less digits than its factorization.

866788526551134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159846.

The product of its digits is 2322432000, while the sum is 75.

The spelling of 866788526551134 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, five hundred fifty-one thousand, one hundred thirty-four".