68128279124478 has 16 divisors (see below), whose sum is σ = 136386450118800. Its totient is φ = 22687777729856.

The previous prime is 68128279124443. The next prime is 68128279124509. The reversal of 68128279124478 is 87442197282186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5412154425 + ... + 5412167012.

It is an arithmetic number, because the mean of its divisors is an integer number (8524153132425).

Almost surely, 2^{68128279124478} is an apocalyptic number.

68128279124478 is an abundant number, since it is smaller than the sum of its proper divisors (68258170994322).

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

68128279124478 is a wasteful number, since it uses less digits than its factorization.

68128279124478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10824322491.

The product of its digits is 173408256, while the sum is 69.

The spelling of 68128279124478 in words is "sixty-eight trillion, one hundred twenty-eight billion, two hundred seventy-nine million, one hundred twenty-four thousand, four hundred seventy-eight".