68145937163 has 4 divisors (see below), whose sum is σ = 72154521720. Its totient is φ = 64137352608.

The previous prime is 68145937151. The next prime is 68145937201. The reversal of 68145937163 is 36173954186.

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 68145937163 - 2⁸ = 68145936907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68145927163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004292253 + ... + 2004292286.

It is an arithmetic number, because the mean of its divisors is an integer number (18038630430).

Almost surely, 2^68145937163 is an apocalyptic number.

68145937163 is a deficient number, since it is larger than the sum of its proper divisors (4008584557).

68145937163 is a wasteful number, since it uses less digits than its factorization.

68145937163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008584556.

The product of its digits is 3265920, while the sum is 53.

The spelling of 68145937163 in words is "sixty-eight billion, one hundred forty-five million, nine hundred thirty-seven thousand, one hundred sixty-three".