2016816618601 has 2 divisors, whose sum is σ = 2016816618602. Its totient is φ = 2016816618600.

The previous prime is 2016816618571. The next prime is 2016816618643. The reversal of 2016816618601 is 1068166186102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192352618601 + 824464000000 = 1091949^2 + 908000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2016816618601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2016816618671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008408309300 + 1008408309301.

It is an arithmetic number, because the mean of its divisors is an integer number (1008408309301).

Almost surely, 2^{2016816618601} is an apocalyptic number.

It is an amenable number.

2016816618601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2016816618601 is an equidigital number, since it uses as much as digits as its factorization.

2016816618601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 2016816618601 in words is "two trillion, sixteen billion, eight hundred sixteen million, six hundred eighteen thousand, six hundred one".