67280134668 has 24 divisors (see below), whose sum is σ = 156996823872. Its totient is φ = 22425305424.

The previous prime is 67280134667. The next prime is 67280134693. The reversal of 67280134668 is 86643108276.

It is a self number, because there is not a number n which added to its sum of digits gives 67280134668.

It is not an unprimeable number, because it can be changed into a prime (67280134667) 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, 33571 + ... + 368357.

It is an arithmetic number, because the mean of its divisors is an integer number (6541534328).

Almost surely, 2^67280134668 is an apocalyptic number.

It is an amenable number.

67280134668 is an abundant number, since it is smaller than the sum of its proper divisors (89716689204).

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

67280134668 is a wasteful number, since it uses less digits than its factorization.

67280134668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351541 (or 351539 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 67280134668 in words is "sixty-seven billion, two hundred eighty million, one hundred thirty-four thousand, six hundred sixty-eight".