8137817821343 has 4 divisors (see below), whose sum is σ = 9300363224400. Its totient is φ = 6975272418288.

The previous prime is 8137817821321. The next prime is 8137817821417. The reversal of 8137817821343 is 3431287187318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8137817821343 - 2²⁴ = 8137801044127 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 (8137817821313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581272701518 + ... + 581272701531.

It is an arithmetic number, because the mean of its divisors is an integer number (2325090806100).

Almost surely, 2^{8137817821343} is an apocalyptic number.

8137817821343 is a deficient number, since it is larger than the sum of its proper divisors (1162545403057).

8137817821343 is a wasteful number, since it uses less digits than its factorization.

8137817821343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162545403056.

The product of its digits is 5419008, while the sum is 56.

The spelling of 8137817821343 in words is "eight trillion, one hundred thirty-seven billion, eight hundred seventeen million, eight hundred twenty-one thousand, three hundred forty-three".