997375673453 has 2 divisors, whose sum is σ = 997375673454. Its totient is φ = 997375673452.

The previous prime is 997375673407. The next prime is 997375673473. The reversal of 997375673453 is 354376573799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994212398404 + 3163275049 = 997102^2 + 56243^2 .

It is a cyclic number.

It is not a de Polignac number, because 997375673453 - 2¹⁰ = 997375672429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997375673473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498687836726 + 498687836727.

It is an arithmetic number, because the mean of its divisors is an integer number (498687836727).

Almost surely, 2^997375673453 is an apocalyptic number.

It is an amenable number.

997375673453 is a deficient number, since it is larger than the sum of its proper divisors (1).

997375673453 is an equidigital number, since it uses as much as digits as its factorization.

997375673453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450084600, while the sum is 68.

The spelling of 997375673453 in words is "nine hundred ninety-seven billion, three hundred seventy-five million, six hundred seventy-three thousand, four hundred fifty-three".