68051788313 has 4 divisors (see below), whose sum is σ = 68343856308. Its totient is φ = 67759720320.

The previous prime is 68051788303. The next prime is 68051788333. The reversal of 68051788313 is 31388715086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30977056009 + 37074732304 = 176003^2 + 192548^2 .

It is a cyclic number.

It is not a de Polignac number, because 68051788313 - 2¹⁴ = 68051771929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68051788303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146033648 + ... + 146034113.

It is an arithmetic number, because the mean of its divisors is an integer number (17085964077).

Almost surely, 2^68051788313 is an apocalyptic number.

It is an amenable number.

68051788313 is a deficient number, since it is larger than the sum of its proper divisors (292067995).

68051788313 is a wasteful number, since it uses less digits than its factorization.

68051788313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292067994.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 68051788313 in words is "sixty-eight billion, fifty-one million, seven hundred eighty-eight thousand, three hundred thirteen".