67138403922 has 54 divisors (see below), whose sum is σ = 146776296303. Its totient is φ = 22179759264.

The previous prime is 67138403903. The next prime is 67138404001. The reversal of 67138403922 is 22930483176.

It can be written as a sum of positive squares in 5 ways, for example, as 5639859801 + 61498544121 = 75099^2 + 247989^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=183219.

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 26 ways as a sum of consecutive naturals, for example, 172592104 + ... + 172592492.

Almost surely, 2^67138403922 is an apocalyptic number.

67138403922 is an abundant number, since it is smaller than the sum of its proper divisors (79637892381).

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

67138403922 is an equidigital number, since it uses as much as digits as its factorization.

67138403922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 67138403922 in words is "sixty-seven billion, one hundred thirty-eight million, four hundred three thousand, nine hundred twenty-two".