4511311441561 has 2 divisors, whose sum is σ = 4511311441562. Its totient is φ = 4511311441560.

The previous prime is 4511311441517. The next prime is 4511311441591. The reversal of 4511311441561 is 1651441131154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4353352887961 + 157958553600 = 2086469^2 + 397440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4511311441561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4511311441561.

It is not a weakly prime, because it can be changed into another prime (4511311441591) 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, 2255655720780 + 2255655720781.

It is an arithmetic number, because the mean of its divisors is an integer number (2255655720781).

Almost surely, 2^{4511311441561} is an apocalyptic number.

It is an amenable number.

4511311441561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4511311441561 is an equidigital number, since it uses as much as digits as its factorization.

4511311441561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 37.

The spelling of 4511311441561 in words is "four trillion, five hundred eleven billion, three hundred eleven million, four hundred forty-one thousand, five hundred sixty-one".