450864124561 has 2 divisors, whose sum is σ = 450864124562. Its totient is φ = 450864124560.

The previous prime is 450864124537. The next prime is 450864124603. The reversal of 450864124561 is 165421468054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384547574161 + 66316550400 = 620119^2 + 257520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450864124561 is a prime.

It is not a weakly prime, because it can be changed into another prime (450864124661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225432062280 + 225432062281.

It is an arithmetic number, because the mean of its divisors is an integer number (225432062281).

Almost surely, 2^450864124561 is an apocalyptic number.

It is an amenable number.

450864124561 is a deficient number, since it is larger than the sum of its proper divisors (1).

450864124561 is an equidigital number, since it uses as much as digits as its factorization.

450864124561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 450864124561 in words is "four hundred fifty billion, eight hundred sixty-four million, one hundred twenty-four thousand, five hundred sixty-one".