168787207073 has 2 divisors, whose sum is σ = 168787207074. Its totient is φ = 168787207072.

The previous prime is 168787207007. The next prime is 168787207087. The reversal of 168787207073 is 370702787861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84624555409 + 84162651664 = 290903^2 + 290108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168787207073 is a prime.

It is not a weakly prime, because it can be changed into another prime (168787297073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84393603536 + 84393603537.

It is an arithmetic number, because the mean of its divisors is an integer number (84393603537).

Almost surely, 2^168787207073 is an apocalyptic number.

It is an amenable number.

168787207073 is a deficient number, since it is larger than the sum of its proper divisors (1).

168787207073 is an equidigital number, since it uses as much as digits as its factorization.

168787207073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5531904, while the sum is 56.

The spelling of 168787207073 in words is "one hundred sixty-eight billion, seven hundred eighty-seven million, two hundred seven thousand, seventy-three".