68310978556146 has 16 divisors (see below), whose sum is σ = 136687609207008. Its totient is φ = 22759384169600.

The previous prime is 68310978556133. The next prime is 68310978556157. The reversal of 68310978556146 is 64165587901386.

68310978556146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2735490420 + ... + 2735515391.

It is an arithmetic number, because the mean of its divisors is an integer number (8542975575438).

Almost surely, 2^{68310978556146} is an apocalyptic number.

68310978556146 is an abundant number, since it is smaller than the sum of its proper divisors (68376630650862).

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

68310978556146 is a wasteful number, since it uses less digits than its factorization.

68310978556146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5471007897.

The product of its (nonzero) digits is 261273600, while the sum is 69.

The spelling of 68310978556146 in words is "sixty-eight trillion, three hundred ten billion, nine hundred seventy-eight million, five hundred fifty-six thousand, one hundred forty-six".