68068148731 has 4 divisors (see below), whose sum is σ = 74256162264. Its totient is φ = 61880135200.

The previous prime is 68068148719. The next prime is 68068148741. The reversal of 68068148731 is 13784186086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68068148731 - 2⁹ = 68068148219 is a prime.

It is a super-2 number, since 2×68068148731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68068148741) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3094006750 + ... + 3094006771.

It is an arithmetic number, because the mean of its divisors is an integer number (18564040566).

Almost surely, 2^68068148731 is an apocalyptic number.

68068148731 is a deficient number, since it is larger than the sum of its proper divisors (6188013533).

68068148731 is a wasteful number, since it uses less digits than its factorization.

68068148731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188013532.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 68068148731 in words is "sixty-eight billion, sixty-eight million, one hundred forty-eight thousand, seven hundred thirty-one".