168678249877 has 16 divisors (see below), whose sum is σ = 174564149760. Its totient is φ = 162820569600.

The previous prime is 168678249869. The next prime is 168678249941. The reversal of 168678249877 is 778942876861.

It is a cyclic number.

It is not a de Polignac number, because 168678249877 - 2³ = 168678249869 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 (163678249877) 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 15 ways as a sum of consecutive naturals, for example, 42135958 + ... + 42139960.

It is an arithmetic number, because the mean of its divisors is an integer number (10910259360).

Almost surely, 2^168678249877 is an apocalyptic number.

It is an amenable number.

168678249877 is a deficient number, since it is larger than the sum of its proper divisors (5885899883).

168678249877 is a wasteful number, since it uses less digits than its factorization.

168678249877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164.

The product of its digits is 455196672, while the sum is 73.

The spelling of 168678249877 in words is "one hundred sixty-eight billion, six hundred seventy-eight million, two hundred forty-nine thousand, eight hundred seventy-seven".