68308222072 has 16 divisors (see below), whose sum is σ = 131056473240. Its totient is φ = 33359829216.

The previous prime is 68308222067. The next prime is 68308222079. The reversal of 68308222072 is 27022280386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68308222079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99284863 + ... + 99285550.

Almost surely, 2^68308222072 is an apocalyptic number.

It is an amenable number.

68308222072 is a deficient number, since it is larger than the sum of its proper divisors (62748251168).

68308222072 is a wasteful number, since it uses less digits than its factorization.

68308222072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198570462 (or 198570458 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 68308222072 in words is "sixty-eight billion, three hundred eight million, two hundred twenty-two thousand, seventy-two".