68310721006 has 16 divisors (see below), whose sum is σ = 111806286768. Its totient is φ = 31043353600.

The previous prime is 68310720997. The next prime is 68310721097. The reversal of 68310721006 is 60012701386.

It is a congruent number.

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, 247885 + ... + 445048.

It is an arithmetic number, because the mean of its divisors is an integer number (6987892923).

Almost surely, 2^68310721006 is an apocalyptic number.

68310721006 is a deficient number, since it is larger than the sum of its proper divisors (43495565762).

68310721006 is a wasteful number, since it uses less digits than its factorization.

68310721006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697427.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 68310721006 in words is "sixty-eight billion, three hundred ten million, seven hundred twenty-one thousand, six".