997396693799 has 8 divisors (see below), whose sum is σ = 1089826913280. Its totient is φ = 905259439800.

The previous prime is 997396693793. The next prime is 997396693849.

997396693799 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997396693799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 997396693799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997396693793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73234247 + ... + 73247864.

It is an arithmetic number, because the mean of its divisors is an integer number (136228364160).

Almost surely, 2^997396693799 is an apocalyptic number.

997396693799 is a deficient number, since it is larger than the sum of its proper divisors (92430219481).

997396693799 is a wasteful number, since it uses less digits than its factorization.

997396693799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146482741.

The product of its digits is 8437157316, while the sum is 86.

The spelling of 997396693799 in words is "nine hundred ninety-seven billion, three hundred ninety-six million, six hundred ninety-three thousand, seven hundred ninety-nine".