6782217452220 has 96 divisors (see below), whose sum is σ = 21703726453248. Its totient is φ = 1550176088832.

The previous prime is 6782217452177. The next prime is 6782217452237. The reversal of 6782217452220 is 222547122876.

It is a self number, because there is not a number n which added to its sum of digits gives 6782217452220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15490839 + ... + 15922641.

It is an arithmetic number, because the mean of its divisors is an integer number (226080483888).

Almost surely, 2^{6782217452220} is an apocalyptic number.

6782217452220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6782217452220 is an abundant number, since it is smaller than the sum of its proper divisors (14921509001028).

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

6782217452220 is a wasteful number, since it uses less digits than its factorization.

6782217452220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469219 (or 469217 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 6782217452220 in words is "six trillion, seven hundred eighty-two billion, two hundred seventeen million, four hundred fifty-two thousand, two hundred twenty".