866763832003749 has 160 divisors (see below), whose sum is σ = 1369755602265600. Its totient is φ = 545129857958400.

The previous prime is 866763832003673. The next prime is 866763832003757. The reversal of 866763832003749 is 947300238367668.

866763832003749 is a `hidden beast` number, since 8 + 6 + 6 + 7 + 6 + 383 + 200 + 37 + 4 + 9 = 666.

It is not a de Polignac number, because 866763832003749 - 2¹⁷ = 866763831872677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866763832003049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 53940114687 + ... + 53940130755.

It is an arithmetic number, because the mean of its divisors is an integer number (8560972514160).

Almost surely, 2^{866763832003749} is an apocalyptic number.

It is an amenable number.

866763832003749 is a deficient number, since it is larger than the sum of its proper divisors (502991770261851).

866763832003749 is a wasteful number, since it uses less digits than its factorization.

866763832003749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17297 (or 17288 counting only the distinct ones).

The product of its (nonzero) digits is 1316818944, while the sum is 72.

The spelling of 866763832003749 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, eight hundred thirty-two million, three thousand, seven hundred forty-nine".