997113718263 has 32 divisors (see below), whose sum is σ = 1452567626944. Its totient is φ = 604701821952.

The previous prime is 997113718259. The next prime is 997113718297. The reversal of 997113718263 is 362817311799.

It is not a de Polignac number, because 997113718263 - 2² = 997113718259 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 (997113718213) 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 in 31 ways as a sum of consecutive naturals, for example, 3309045 + ... + 3597777.

It is an arithmetic number, because the mean of its divisors is an integer number (45392738342).

Almost surely, 2^997113718263 is an apocalyptic number.

997113718263 is a deficient number, since it is larger than the sum of its proper divisors (455453908681).

997113718263 is a wasteful number, since it uses less digits than its factorization.

997113718263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290035.

The product of its digits is 3429216, while the sum is 57.

The spelling of 997113718263 in words is "nine hundred ninety-seven billion, one hundred thirteen million, seven hundred eighteen thousand, two hundred sixty-three".