866763806411634 has 64 divisors (see below), whose sum is σ = 1756841788416000. Its totient is φ = 285041372084352.

The previous prime is 866763806411623. The next prime is 866763806411693. The reversal of 866763806411634 is 436114608367668.

It is a happy number.

It is a super-2 number, since 2×866763806411634² (a number of 31 digits) contains 22 as substring.

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, 3144880167 + ... + 3145155765.

It is an arithmetic number, because the mean of its divisors is an integer number (27450652944000).

Almost surely, 2^{866763806411634} is an apocalyptic number.

866763806411634 is an abundant number, since it is smaller than the sum of its proper divisors (890077982004366).

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

866763806411634 is a wasteful number, since it uses less digits than its factorization.

866763806411634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280839.

The product of its (nonzero) digits is 501645312, while the sum is 69.

The spelling of 866763806411634 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, eight hundred six million, four hundred eleven thousand, six hundred thirty-four".