67143416121 has 24 divisors (see below), whose sum is σ = 102749591880. Its totient is φ = 42104726016.

The previous prime is 67143416111. The next prime is 67143416159. The reversal of 67143416121 is 12161434176.

67143416121 is a `hidden beast` number, since 6 + 7 + 1 + 4 + 34 + 1 + 612 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 36933152400 + 30210263721 = 192180^2 + 173811^2 .

It is not a de Polignac number, because 67143416121 - 2⁹ = 67143415609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67143416111) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 138535 + ... + 391763.

It is an arithmetic number, because the mean of its divisors is an integer number (4281232995).

Almost surely, 2^67143416121 is an apocalyptic number.

It is an amenable number.

67143416121 is a deficient number, since it is larger than the sum of its proper divisors (35606175759).

67143416121 is a wasteful number, since it uses less digits than its factorization.

67143416121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254985 (or 254982 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The spelling of 67143416121 in words is "sixty-seven billion, one hundred forty-three million, four hundred sixteen thousand, one hundred twenty-one".