866621160001 has 8 divisors (see below), whose sum is σ = 879066753408. Its totient is φ = 854182224000.

The previous prime is 866621159977. The next prime is 866621160007. The reversal of 866621160001 is 100061126668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 866621160001 - 2⁵ = 866621159969 is a prime.

It is a super-3 number, since 3×866621160001³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866621160007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401840 + ... + 1923121.

It is an arithmetic number, because the mean of its divisors is an integer number (109883344176).

Almost surely, 2^866621160001 is an apocalyptic number.

It is an amenable number.

866621160001 is a deficient number, since it is larger than the sum of its proper divisors (12445593407).

866621160001 is a wasteful number, since it uses less digits than its factorization.

866621160001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328703.

The product of its (nonzero) digits is 20736, while the sum is 37.

Adding to 866621160001 its reverse (100061126668), we get a palindrome (966682286669).

The spelling of 866621160001 in words is "eight hundred sixty-six billion, six hundred twenty-one million, one hundred sixty thousand, one".