68125864187 has 2 divisors, whose sum is σ = 68125864188. Its totient is φ = 68125864186.

The previous prime is 68125864099. The next prime is 68125864229. The reversal of 68125864187 is 78146852186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68125864187 - 2¹⁰ = 68125863163 is a prime.

It is a super-2 number, since 2×68125864187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68125864687) 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 as a sum of consecutive naturals, namely, 34062932093 + 34062932094.

It is an arithmetic number, because the mean of its divisors is an integer number (34062932094).

Almost surely, 2^68125864187 is an apocalyptic number.

68125864187 is a deficient number, since it is larger than the sum of its proper divisors (1).

68125864187 is an equidigital number, since it uses as much as digits as its factorization.

68125864187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5160960, while the sum is 56.

The spelling of 68125864187 in words is "sixty-eight billion, one hundred twenty-five million, eight hundred sixty-four thousand, one hundred eighty-seven".