215416168601 has 2 divisors, whose sum is σ = 215416168602. Its totient is φ = 215416168600.

The previous prime is 215416168549. The next prime is 215416168673. The reversal of 215416168601 is 106861614512.

215416168601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211434432400 + 3981736201 = 459820^2 + 63101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215416168601 is a prime.

It is not a weakly prime, because it can be changed into another prime (215416168001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107708084300 + 107708084301.

It is an arithmetic number, because the mean of its divisors is an integer number (107708084301).

Almost surely, 2^215416168601 is an apocalyptic number.

It is an amenable number.

215416168601 is a deficient number, since it is larger than the sum of its proper divisors (1).

215416168601 is an equidigital number, since it uses as much as digits as its factorization.

215416168601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 215416168601 in words is "two hundred fifteen billion, four hundred sixteen million, one hundred sixty-eight thousand, six hundred one".