997454454799 has 16 divisors (see below), whose sum is σ = 1099903693824. Its totient is φ = 896986490400.

The previous prime is 997454454757. The next prime is 997454454817.

It is a happy number.

997454454799 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 997454454799 - 2¹¹ = 997454452751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997454454709) 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 in 15 ways as a sum of consecutive naturals, for example, 548977 + ... + 1515349.

It is an arithmetic number, because the mean of its divisors is an integer number (68743980864).

Almost surely, 2^997454454799 is an apocalyptic number.

997454454799 is a deficient number, since it is larger than the sum of its proper divisors (102449239025).

997454454799 is a wasteful number, since it uses less digits than its factorization.

997454454799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967398.

The product of its digits is 2057529600, while the sum is 76.

The spelling of 997454454799 in words is "nine hundred ninety-seven billion, four hundred fifty-four million, four hundred fifty-four thousand, seven hundred ninety-nine".