201616206049 has 2 divisors, whose sum is σ = 201616206050. Its totient is φ = 201616206048.

The previous prime is 201616206047. The next prime is 201616206079. The reversal of 201616206049 is 940602616102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141966936225 + 59649269824 = 376785^2 + 244232^2 .

It is a cyclic number.

It is not a de Polignac number, because 201616206049 - 2¹ = 201616206047 is a prime.

Together with 201616206047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 201616205999 and 201616206017.

It is not a weakly prime, because it can be changed into another prime (201616206047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100808103024 + 100808103025.

It is an arithmetic number, because the mean of its divisors is an integer number (100808103025).

Almost surely, 2^201616206049 is an apocalyptic number.

It is an amenable number.

201616206049 is a deficient number, since it is larger than the sum of its proper divisors (1).

201616206049 is an equidigital number, since it uses as much as digits as its factorization.

201616206049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 201616206049 in words is "two hundred one billion, six hundred sixteen million, two hundred six thousand, forty-nine".