201613440449 has 2 divisors, whose sum is σ = 201613440450. Its totient is φ = 201613440448.

The previous prime is 201613440403. The next prime is 201613440451. The reversal of 201613440449 is 944044316102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160005600049 + 41607840400 = 400007^2 + 203980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201613440449 is a prime.

Together with 201613440451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201613430449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100806720224 + 100806720225.

It is an arithmetic number, because the mean of its divisors is an integer number (100806720225).

Almost surely, 2^201613440449 is an apocalyptic number.

It is an amenable number.

201613440449 is a deficient number, since it is larger than the sum of its proper divisors (1).

201613440449 is an equidigital number, since it uses as much as digits as its factorization.

201613440449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 201613440449 in words is "two hundred one billion, six hundred thirteen million, four hundred forty thousand, four hundred forty-nine".