68079953185 has 4 divisors (see below), whose sum is σ = 81695943828. Its totient is φ = 54463962544.

The previous prime is 68079953171. The next prime is 68079953191. The reversal of 68079953185 is 58135997086.

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 22502400064 + 45577553121 = 150008^2 + 213489^2 .

It is a cyclic number.

It is not a de Polignac number, because 68079953185 - 2¹⁹ = 68079428897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 6807995314 + ... + 6807995323.

It is an arithmetic number, because the mean of its divisors is an integer number (20423985957).

Almost surely, 2^68079953185 is an apocalyptic number.

It is an amenable number.

68079953185 is a deficient number, since it is larger than the sum of its proper divisors (13615990643).

68079953185 is a wasteful number, since it uses less digits than its factorization.

68079953185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13615990642.

The product of its (nonzero) digits is 16329600, while the sum is 61.

The spelling of 68079953185 in words is "sixty-eight billion, seventy-nine million, nine hundred fifty-three thousand, one hundred eighty-five".