68278466905 has 32 divisors (see below), whose sum is σ = 89699760000. Its totient is φ = 49481280000.

The previous prime is 68278466881. The next prime is 68278466917. The reversal of 68278466905 is 50966487286.

It is not a de Polignac number, because 68278466905 - 2⁷ = 68278466777 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 22750405 + ... + 22753405.

It is an arithmetic number, because the mean of its divisors is an integer number (2803117500).

Almost surely, 2^68278466905 is an apocalyptic number.

It is an amenable number.

68278466905 is a deficient number, since it is larger than the sum of its proper divisors (21421293095).

68278466905 is a wasteful number, since it uses less digits than its factorization.

68278466905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 68278466905 in words is "sixty-eight billion, two hundred seventy-eight million, four hundred sixty-six thousand, nine hundred five".