351816168359917 has 2 divisors, whose sum is σ = 351816168359918. Its totient is φ = 351816168359916.

The previous prime is 351816168359897. The next prime is 351816168359941. The reversal of 351816168359917 is 719953861618153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264949648871076 + 86866519488841 = 16277274^2 + 9320221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351816168359917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351816168359917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351816168359947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175908084179958 + 175908084179959.

It is an arithmetic number, because the mean of its divisors is an integer number (175908084179959).

Almost surely, 2^{351816168359917} is an apocalyptic number.

It is an amenable number.

351816168359917 is a deficient number, since it is larger than the sum of its proper divisors (1).

351816168359917 is an equidigital number, since it uses as much as digits as its factorization.

351816168359917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 293932800, while the sum is 73.

The spelling of 351816168359917 in words is "three hundred fifty-one trillion, eight hundred sixteen billion, one hundred sixty-eight million, three hundred fifty-nine thousand, nine hundred seventeen".