866187085674383 has 32 divisors (see below), whose sum is σ = 956441212446720. Its totient is φ = 777881615616000.

The previous prime is 866187085674353. The next prime is 866187085674439. The reversal of 866187085674383 is 383476580781668.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866187085674383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866187085674298 and 866187085674307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866187085674353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6536652098 + ... + 6536784608.

It is an arithmetic number, because the mean of its divisors is an integer number (29888787888960).

Almost surely, 2^{866187085674383} is an apocalyptic number.

866187085674383 is a deficient number, since it is larger than the sum of its proper divisors (90254126772337).

866187085674383 is a wasteful number, since it uses less digits than its factorization.

866187085674383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143919.

The product of its (nonzero) digits is 7803371520, while the sum is 80.

The spelling of 866187085674383 in words is "eight hundred sixty-six trillion, one hundred eighty-seven billion, eighty-five million, six hundred seventy-four thousand, three hundred eighty-three".