68356480187 has 2 divisors, whose sum is σ = 68356480188. Its totient is φ = 68356480186.

The previous prime is 68356480183. The next prime is 68356480201. The reversal of 68356480187 is 78108465386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68356480187 - 2² = 68356480183 is a prime.

It is not a weakly prime, because it can be changed into another prime (68356480183) 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, 34178240093 + 34178240094.

It is an arithmetic number, because the mean of its divisors is an integer number (34178240094).

Almost surely, 2^68356480187 is an apocalyptic number.

68356480187 is a deficient number, since it is larger than the sum of its proper divisors (1).

68356480187 is an equidigital number, since it uses as much as digits as its factorization.

68356480187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 68356480187 in words is "sixty-eight billion, three hundred fifty-six million, four hundred eighty thousand, one hundred eighty-seven".