867861706121 has 8 divisors (see below), whose sum is σ = 876337949760. Its totient is φ = 859386431952.

The previous prime is 867861706097. The next prime is 867861706139. The reversal of 867861706121 is 121607168768.

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 867861706121 - 2³⁰ = 866787964297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (867861706171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626791 + ... + 2093363.

It is an arithmetic number, because the mean of its divisors is an integer number (109542243720).

Almost surely, 2^867861706121 is an apocalyptic number.

It is an amenable number.

867861706121 is a deficient number, since it is larger than the sum of its proper divisors (8476243639).

867861706121 is a wasteful number, since it uses less digits than its factorization.

867861706121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484735.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 867861706121 in words is "eight hundred sixty-seven billion, eight hundred sixty-one million, seven hundred six thousand, one hundred twenty-one".