860868664221 has 32 divisors (see below), whose sum is σ = 1176600453120. Its totient is φ = 559728936000.

The previous prime is 860868664193. The next prime is 860868664267. The reversal of 860868664221 is 122466868068.

It is not a de Polignac number, because 860868664221 - 2⁵ = 860868664189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860868660221) 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 31 ways as a sum of consecutive naturals, for example, 10275126 + ... + 10358568.

It is an arithmetic number, because the mean of its divisors is an integer number (36768764160).

Almost surely, 2^860868664221 is an apocalyptic number.

It is an amenable number.

860868664221 is a deficient number, since it is larger than the sum of its proper divisors (315731788899).

860868664221 is a wasteful number, since it uses less digits than its factorization.

860868664221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84057.

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 860868664221 in words is "eight hundred sixty billion, eight hundred sixty-eight million, six hundred sixty-four thousand, two hundred twenty-one".