861221141122168 has 16 divisors (see below), whose sum is σ = 1614996849991680. Its totient is φ = 430555314457728.

The previous prime is 861221141122123. The next prime is 861221141122327.

861221141122168 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6906946680 + ... + 6907071367.

It is an arithmetic number, because the mean of its divisors is an integer number (100937303124480).

Almost surely, 2^{861221141122168} is an apocalyptic number.

It is an amenable number.

861221141122168 is a deficient number, since it is larger than the sum of its proper divisors (753775708869512).

861221141122168 is a wasteful number, since it uses less digits than its factorization.

861221141122168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13814025846 (or 13814025842 counting only the distinct ones).

The product of its digits is 147456, while the sum is 46.

The spelling of 861221141122168 in words is "eight hundred sixty-one trillion, two hundred twenty-one billion, one hundred forty-one million, one hundred twenty-two thousand, one hundred sixty-eight".