168908750057 has 2 divisors, whose sum is σ = 168908750058. Its totient is φ = 168908750056.

The previous prime is 168908750029. The next prime is 168908750069. The reversal of 168908750057 is 750057809861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168897162841 + 11587216 = 410971^2 + 3404^2 .

It is a cyclic number.

It is not a de Polignac number, because 168908750057 - 2⁶ = 168908749993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168908749984 and 168908750011.

It is not a weakly prime, because it can be changed into another prime (168908750657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84454375028 + 84454375029.

It is an arithmetic number, because the mean of its divisors is an integer number (84454375029).

Almost surely, 2^168908750057 is an apocalyptic number.

It is an amenable number.

168908750057 is a deficient number, since it is larger than the sum of its proper divisors (1).

168908750057 is an equidigital number, since it uses as much as digits as its factorization.

168908750057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The spelling of 168908750057 in words is "one hundred sixty-eight billion, nine hundred eight million, seven hundred fifty thousand, fifty-seven".