8321981304919 has 16 divisors (see below), whose sum is σ = 8532819599040. Its totient is φ = 8114257520640.

The previous prime is 8321981304899. The next prime is 8321981304983. The reversal of 8321981304919 is 9194031891238.

It is a cyclic number.

It is not a de Polignac number, because 8321981304919 - 2¹⁵ = 8321981272151 is a prime.

It is a super-2 number, since 2×8321981304919² (a number of 27 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 (8321981304619) 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 15 ways as a sum of consecutive naturals, for example, 683862 + ... + 4136620.

It is an arithmetic number, because the mean of its divisors is an integer number (533301224940).

Almost surely, 2^{8321981304919} is an apocalyptic number.

8321981304919 is a deficient number, since it is larger than the sum of its proper divisors (210838294121).

8321981304919 is a wasteful number, since it uses less digits than its factorization.

8321981304919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453210.

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 8321981304919 in words is "eight trillion, three hundred twenty-one billion, nine hundred eighty-one million, three hundred four thousand, nine hundred nineteen".