168614042821 has 8 divisors (see below), whose sum is σ = 192710274944. Its totient is φ = 144519938640.

The previous prime is 168614042813. The next prime is 168614042851. The reversal of 168614042821 is 128240416861.

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

It is not a de Polignac number, because 168614042821 - 2³ = 168614042813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168614042851) 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, 358410 + ... + 682411.

It is an arithmetic number, because the mean of its divisors is an integer number (24088784368).

Almost surely, 2^168614042821 is an apocalyptic number.

It is an amenable number.

168614042821 is a deficient number, since it is larger than the sum of its proper divisors (24096232123).

168614042821 is a wasteful number, since it uses less digits than its factorization.

168614042821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063971.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 168614042821 in words is "one hundred sixty-eight billion, six hundred fourteen million, forty-two thousand, eight hundred twenty-one".