821894848343 has 8 divisors (see below), whose sum is σ = 894985316400. Its totient is φ = 751787664768.

The previous prime is 821894848339. The next prime is 821894848361. The reversal of 821894848343 is 343848498128.

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

It is a cyclic number.

It is not a de Polignac number, because 821894848343 - 2² = 821894848339 is a prime.

It is a super-2 number, since 2×821894848343² (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 (821894847343) 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, 745820546 + ... + 745821647.

It is an arithmetic number, because the mean of its divisors is an integer number (111873164550).

Almost surely, 2^821894848343 is an apocalyptic number.

821894848343 is a deficient number, since it is larger than the sum of its proper divisors (73090468057).

821894848343 is a wasteful number, since it uses less digits than its factorization.

821894848343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491642241.

The product of its digits is 42467328, while the sum is 62.

The spelling of 821894848343 in words is "eight hundred twenty-one billion, eight hundred ninety-four million, eight hundred forty-eight thousand, three hundred forty-three".