997530759871 has 2 divisors, whose sum is σ = 997530759872. Its totient is φ = 997530759870.

The previous prime is 997530759791. The next prime is 997530759931. The reversal of 997530759871 is 178957035799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997530759871 - 2⁹ = 997530759359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997530759871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997530751871) 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, 498765379935 + 498765379936.

It is an arithmetic number, because the mean of its divisors is an integer number (498765379936).

Almost surely, 2^997530759871 is an apocalyptic number.

997530759871 is a deficient number, since it is larger than the sum of its proper divisors (1).

997530759871 is an equidigital number, since it uses as much as digits as its factorization.

997530759871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150028200, while the sum is 70.

The spelling of 997530759871 in words is "nine hundred ninety-seven billion, five hundred thirty million, seven hundred fifty-nine thousand, eight hundred seventy-one".