168901416613 has 2 divisors, whose sum is σ = 168901416614. Its totient is φ = 168901416612.

The previous prime is 168901416611. The next prime is 168901416647. The reversal of 168901416613 is 316614109861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146878263009 + 22023153604 = 383247^2 + 148402^2 .

It is a cyclic number.

It is not a de Polignac number, because 168901416613 - 2¹ = 168901416611 is a prime.

Together with 168901416611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168901416611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84450708306 + 84450708307.

It is an arithmetic number, because the mean of its divisors is an integer number (84450708307).

Almost surely, 2^168901416613 is an apocalyptic number.

It is an amenable number.

168901416613 is a deficient number, since it is larger than the sum of its proper divisors (1).

168901416613 is an equidigital number, since it uses as much as digits as its factorization.

168901416613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 168901416613 in words is "one hundred sixty-eight billion, nine hundred one million, four hundred sixteen thousand, six hundred thirteen".