813368863319 has 8 divisors (see below), whose sum is σ = 834918046368. Its totient is φ = 791901152640.

The previous prime is 813368863313. The next prime is 813368863387. The reversal of 813368863319 is 913368863318.

It is a happy number.

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-813368863319 is a prime.

It is a super-2 number, since 2×813368863319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813368863313) 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, 20347862 + ... + 20387795.

It is an arithmetic number, because the mean of its divisors is an integer number (104364755796).

Almost surely, 2^813368863319 is an apocalyptic number.

813368863319 is a deficient number, since it is larger than the sum of its proper divisors (21549183049).

813368863319 is a wasteful number, since it uses less digits than its factorization.

813368863319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40736185.

The product of its digits is 13436928, while the sum is 59.

Subtracting 813368863319 from its reverse (913368863318), we obtain a palindrome (99999999999).

The spelling of 813368863319 in words is "eight hundred thirteen billion, three hundred sixty-eight million, eight hundred sixty-three thousand, three hundred nineteen".