67128620080 has 40 divisors (see below), whose sum is σ = 156221063712. Its totient is φ = 26826153984.

The previous prime is 67128620077. The next prime is 67128620081. The reversal of 67128620080 is 8002682176.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (67128620081) 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 7 ways as a sum of consecutive naturals, for example, 309649 + ... + 479728.

Almost surely, 2^67128620080 is an apocalyptic number.

It is an amenable number.

67128620080 is an abundant number, since it is smaller than the sum of its proper divisors (89092443632).

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

67128620080 is a wasteful number, since it uses less digits than its factorization.

67128620080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790453 (or 790447 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 67128620080 in words is "sixty-seven billion, one hundred twenty-eight million, six hundred twenty thousand, eighty".