866763546746438 has 48 divisors (see below), whose sum is σ = 1429466395962528. Its totient is φ = 393878393251200.

The previous prime is 866763546746437. The next prime is 866763546746501. The reversal of 866763546746438 is 834647645367668.

It is a super-2 number, since 2×866763546746438² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866763546746437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30757004708 + ... + 30757032888.

It is an arithmetic number, because the mean of its divisors is an integer number (29780549915886).

Almost surely, 2^{866763546746438} is an apocalyptic number.

866763546746438 is a deficient number, since it is larger than the sum of its proper divisors (562702849216090).

866763546746438 is a wasteful number, since it uses less digits than its factorization.

866763546746438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57581 (or 57570 counting only the distinct ones).

The product of its digits is 70230343680, while the sum is 83.

The spelling of 866763546746438 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, five hundred forty-six million, seven hundred forty-six thousand, four hundred thirty-eight".