971515205473 has 2 divisors, whose sum is σ = 971515205474. Its totient is φ = 971515205472.

The previous prime is 971515205467. The next prime is 971515205527. The reversal of 971515205473 is 374502515179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 689079291664 + 282435913809 = 830108^2 + 531447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-971515205473 is a prime.

It is not a weakly prime, because it can be changed into another prime (971515245473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485757602736 + 485757602737.

It is an arithmetic number, because the mean of its divisors is an integer number (485757602737).

Almost surely, 2^971515205473 is an apocalyptic number.

It is an amenable number.

971515205473 is a deficient number, since it is larger than the sum of its proper divisors (1).

971515205473 is an equidigital number, since it uses as much as digits as its factorization.

971515205473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323000, while the sum is 49.

The spelling of 971515205473 in words is "nine hundred seventy-one billion, five hundred fifteen million, two hundred five thousand, four hundred seventy-three".