7217782168 has 32 divisors (see below), whose sum is σ = 14865004800. Its totient is φ = 3270297888.

The previous prime is 7217782163. The next prime is 7217782181. The reversal of 7217782168 is 8612877127.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7217782163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028796 + ... + 1035787.

It is an arithmetic number, because the mean of its divisors is an integer number (464531400).

Almost surely, 2^7217782168 is an apocalyptic number.

It is an amenable number.

7217782168 is an abundant number, since it is smaller than the sum of its proper divisors (7647222632).

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

7217782168 is a wasteful number, since it uses less digits than its factorization.

7217782168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064631 (or 2064627 counting only the distinct ones).

The product of its digits is 526848, while the sum is 49.

The square root of 7217782168 is about 84957.5315554778. The cubic root of 7217782168 is about 1932.5671377171.

The spelling of 7217782168 in words is "seven billion, two hundred seventeen million, seven hundred eighty-two thousand, one hundred sixty-eight".