67506538128 has 20 divisors (see below), whose sum is σ = 174391890288. Its totient is φ = 22502179360.

The previous prime is 67506538123. The next prime is 67506538163. The reversal of 67506538128 is 82183560576.

It is a happy number.

67506538128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (67506538123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703193058 + ... + 703193153.

Almost surely, 2^67506538128 is an apocalyptic number.

It is an amenable number.

67506538128 is an abundant number, since it is smaller than the sum of its proper divisors (106885352160).

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

67506538128 is a wasteful number, since it uses less digits than its factorization.

67506538128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406386222 (or 1406386216 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 67506538128 in words is "sixty-seven billion, five hundred six million, five hundred thirty-eight thousand, one hundred twenty-eight".