2216611672 has 32 divisors (see below), whose sum is σ = 4547736000. Its totient is φ = 1004493600.

The previous prime is 2216611561. The next prime is 2216611681. The reversal of 2216611672 is 2761166122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8922 + ... + 67177.

It is an arithmetic number, because the mean of its divisors is an integer number (142116750).

Almost surely, 2^2216611672 is an apocalyptic number.

2216611672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2216611672 is an abundant number, since it is smaller than the sum of its proper divisors (2331124328).

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

2216611672 is a wasteful number, since it uses less digits than its factorization.

2216611672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76447 (or 76443 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 2216611672 is about 47080.9055987669. The cubic root of 2216611672 is about 1303.8567267658.

Adding to 2216611672 its reverse (2761166122), we get a palindrome (4977777794).

The spelling of 2216611672 in words is "two billion, two hundred sixteen million, six hundred eleven thousand, six hundred seventy-two".