8218329643619 has 4 divisors (see below), whose sum is σ = 8701760799144. Its totient is φ = 7734898488096.

The previous prime is 8218329643603. The next prime is 8218329643637. The reversal of 8218329643619 is 9163469238128.

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 8218329643619 - 2⁴ = 8218329643603 is a prime.

It is a super-2 number, since 2×8218329643619² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8218329643819) 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, 241715577737 + ... + 241715577770.

It is an arithmetic number, because the mean of its divisors is an integer number (2175440199786).

Almost surely, 2^{8218329643619} is an apocalyptic number.

8218329643619 is a deficient number, since it is larger than the sum of its proper divisors (483431155525).

8218329643619 is a wasteful number, since it uses less digits than its factorization.

8218329643619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483431155524.

The product of its digits is 26873856, while the sum is 62.

The spelling of 8218329643619 in words is "eight trillion, two hundred eighteen billion, three hundred twenty-nine million, six hundred forty-three thousand, six hundred nineteen".