6818219213584 has 45 divisors (see below), whose sum is σ = 13249370202087. Its totient is φ = 3399056594592.

The previous prime is 6818219213573. The next prime is 6818219213593. The reversal of 6818219213584 is 4853129128186.

The square root of 6818219213584 is 2611172.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×6818219213584² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4585217289 + ... + 4585218775.

Almost surely, 2^{6818219213584} is an apocalyptic number.

6818219213584 is the 2611172-nd square number.

It is an amenable number.

6818219213584 is a deficient number, since it is larger than the sum of its proper divisors (6431150988503).

6818219213584 is an frugal number, since it uses more digits than its factorization.

6818219213584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860 (or 1928 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 58.

The spelling of 6818219213584 in words is "six trillion, eight hundred eighteen billion, two hundred nineteen million, two hundred thirteen thousand, five hundred eighty-four".