816993382353 has 8 divisors (see below), whose sum is σ = 1089348525408. Its totient is φ = 544650247104.

The previous prime is 816993382349. The next prime is 816993382379. The reversal of 816993382353 is 353283399618.

It is a happy number.

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

It is not a de Polignac number, because 816993382353 - 2² = 816993382349 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816993382253) 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 7 ways as a sum of consecutive naturals, for example, 2841976 + ... + 3116217.

It is an arithmetic number, because the mean of its divisors is an integer number (136168565676).

Almost surely, 2^816993382353 is an apocalyptic number.

It is an amenable number.

816993382353 is a deficient number, since it is larger than the sum of its proper divisors (272355143055).

816993382353 is a wasteful number, since it uses less digits than its factorization.

816993382353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003903.

The product of its digits is 25194240, while the sum is 60.

The spelling of 816993382353 in words is "eight hundred sixteen billion, nine hundred ninety-three million, three hundred eighty-two thousand, three hundred fifty-three".