450617643505987 has 2 divisors, whose sum is σ = 450617643505988. Its totient is φ = 450617643505986.

The previous prime is 450617643505957. The next prime is 450617643506039. The reversal of 450617643505987 is 789505346716054.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450617643505987 is a prime.

It is not a weakly prime, because it can be changed into another prime (450617643505957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225308821752993 + 225308821752994.

It is an arithmetic number, because the mean of its divisors is an integer number (225308821752994).

Almost surely, 2^{450617643505987} is an apocalyptic number.

450617643505987 is a deficient number, since it is larger than the sum of its proper divisors (1).

450617643505987 is an equidigital number, since it uses as much as digits as its factorization.

450617643505987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048000, while the sum is 70.

The spelling of 450617643505987 in words is "four hundred fifty trillion, six hundred seventeen billion, six hundred forty-three million, five hundred five thousand, nine hundred eighty-seven".