168143686861776 has 40 divisors (see below), whose sum is σ = 434372449455360. Its totient is φ = 56047733246976.

The previous prime is 168143686861699. The next prime is 168143686861783. The reversal of 168143686861776 is 677168686341861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12278785 + ... + 22069343.

It is an arithmetic number, because the mean of its divisors is an integer number (10859311236384).

Almost surely, 2^{168143686861776} is an apocalyptic number.

168143686861776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168143686861776 is an abundant number, since it is smaller than the sum of its proper divisors (266228762593584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168143686861776 is a wasteful number, since it uses less digits than its factorization.

168143686861776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10148363 (or 10148357 counting only the distinct ones).

The product of its digits is 2341011456, while the sum is 78.

The spelling of 168143686861776 in words is "one hundred sixty-eight trillion, one hundred forty-three billion, six hundred eighty-six million, eight hundred sixty-one thousand, seven hundred seventy-six".