68317121249 has 12 divisors (see below), whose sum is σ = 73996442352. Its totient is φ = 63044982000.

The previous prime is 68317121207. The next prime is 68317121261. The reversal of 68317121249 is 94212171386.

It is not a de Polignac number, because 68317121249 - 2¹² = 68317117153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68317121749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 598334 + ... + 703304.

It is an arithmetic number, because the mean of its divisors is an integer number (6166370196).

Almost surely, 2^68317121249 is an apocalyptic number.

It is an amenable number.

68317121249 is a deficient number, since it is larger than the sum of its proper divisors (5679321103).

68317121249 is a wasteful number, since it uses less digits than its factorization.

68317121249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108848 (or 108835 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The spelling of 68317121249 in words is "sixty-eight billion, three hundred seventeen million, one hundred twenty-one thousand, two hundred forty-nine".