201505044149 has 2 divisors, whose sum is σ = 201505044150. Its totient is φ = 201505044148.

The previous prime is 201505044073. The next prime is 201505044151. The reversal of 201505044149 is 941440505102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200368140625 + 1136903524 = 447625^2 + 33718^2 .

It is a cyclic number.

It is not a de Polignac number, because 201505044149 - 2²⁸ = 201236608693 is a prime.

Together with 201505044151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201505034149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100752522074 + 100752522075.

It is an arithmetic number, because the mean of its divisors is an integer number (100752522075).

Almost surely, 2^201505044149 is an apocalyptic number.

It is an amenable number.

201505044149 is a deficient number, since it is larger than the sum of its proper divisors (1).

201505044149 is an equidigital number, since it uses as much as digits as its factorization.

201505044149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 201505044149 in words is "two hundred one billion, five hundred five million, forty-four thousand, one hundred forty-nine".