67136428188 has 18 divisors (see below), whose sum is σ = 169705971344. Its totient is φ = 22378809384.

The previous prime is 67136428187. The next prime is 67136428283. The reversal of 67136428188 is 88182463176.

67136428188 is a `hidden beast` number, since 6 + 7 + 1 + 36 + 428 + 188 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67136428181) 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 5 ways as a sum of consecutive naturals, for example, 932450356 + ... + 932450427.

Almost surely, 2^67136428188 is an apocalyptic number.

It is an amenable number.

67136428188 is an abundant number, since it is smaller than the sum of its proper divisors (102569543156).

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

67136428188 is a wasteful number, since it uses less digits than its factorization.

67136428188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864900793 (or 1864900788 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 67136428188 in words is "sixty-seven billion, one hundred thirty-six million, four hundred twenty-eight thousand, one hundred eighty-eight".