6642216811320 has 64 divisors (see below), whose sum is σ = 21098806348320. Its totient is φ = 1667066179584.

The previous prime is 6642216811297. The next prime is 6642216811333. The reversal of 6642216811320 is 231186122466.

It is a super-4 number, since 4×6642216811320⁴ (a number of 52 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1627992277 + ... + 1627996356.

Almost surely, 2^{6642216811320} is an apocalyptic number.

6642216811320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6642216811320 is an abundant number, since it is smaller than the sum of its proper divisors (14456589537000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6642216811320 is a wasteful number, since it uses less digits than its factorization.

6642216811320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255988664 (or 3255988660 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 6642216811320 in words is "six trillion, six hundred forty-two billion, two hundred sixteen million, eight hundred eleven thousand, three hundred twenty".