68312297305 has 16 divisors (see below), whose sum is σ = 93704054400. Its totient is φ = 46833409152.

The previous prime is 68312297303. The next prime is 68312297377. The reversal of 68312297305 is 50379221386.

It is a cyclic number.

It is not a de Polignac number, because 68312297305 - 2¹ = 68312297303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68312297303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12924 + ... + 369853.

It is an arithmetic number, because the mean of its divisors is an integer number (5856503400).

Almost surely, 2^68312297305 is an apocalyptic number.

It is an amenable number.

68312297305 is a deficient number, since it is larger than the sum of its proper divisors (25391757095).

68312297305 is a wasteful number, since it uses less digits than its factorization.

68312297305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387888.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 68312297305 in words is "sixty-eight billion, three hundred twelve million, two hundred ninety-seven thousand, three hundred five".