67542849128 has 16 divisors (see below), whose sum is σ = 126862335780. Its totient is φ = 33712892928.

The previous prime is 67542849047. The next prime is 67542849137. The reversal of 67542849128 is 82194824576.

It can be written as a sum of positive squares in 2 ways, for example, as 39331615684 + 28211233444 = 198322^2 + 167962^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7311551 + ... + 7320782.

Almost surely, 2^67542849128 is an apocalyptic number.

It is an amenable number.

67542849128 is a deficient number, since it is larger than the sum of its proper divisors (59319486652).

67542849128 is a wasteful number, since it uses less digits than its factorization.

67542849128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14632916 (or 14632912 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 56.

The spelling of 67542849128 in words is "sixty-seven billion, five hundred forty-two million, eight hundred forty-nine thousand, one hundred twenty-eight".