866763546746394 has 192 divisors, whose sum is σ = 2073710479334400. Its totient is φ = 238690769241600.

The previous prime is 866763546746393. The next prime is 866763546746437. The reversal of 866763546746394 is 493647645367668.

It is not an unprimeable number, because it can be changed into a prime (866763546746393) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 476753907 + ... + 478568505.

It is an arithmetic number, because the mean of its divisors is an integer number (10800575413200).

Almost surely, 2^{866763546746394} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866763546746394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036855239667200).

866763546746394 is an abundant number, since it is smaller than the sum of its proper divisors (1206946932588006).

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

866763546746394 is a wasteful number, since it uses less digits than its factorization.

866763546746394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815137 (or 1815106 counting only the distinct ones).

The product of its digits is 79009136640, while the sum is 84.

The spelling of 866763546746394 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, five hundred forty-six million, seven hundred forty-six thousand, three hundred ninety-four".