2231116664 has 64 divisors (see below), whose sum is σ = 4851887040. Its totient is φ = 942105600.

The previous prime is 2231116637. The next prime is 2231116733. The reversal of 2231116664 is 4666111322.

It is a super-3 number, since 3×2231116664³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231116664.

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, 1317002 + ... + 1318694.

It is an arithmetic number, because the mean of its divisors is an integer number (75810735).

Almost surely, 2^2231116664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231116664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2425943520).

2231116664 is an abundant number, since it is smaller than the sum of its proper divisors (2620770376).

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

2231116664 is a wasteful number, since it uses less digits than its factorization.

2231116664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040 (or 2036 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 2231116664 is about 47234.6976702508. The cubic root of 2231116664 is about 1306.6945908351.

Adding to 2231116664 its reverse (4666111322), we get a palindrome (6897227986).

The spelling of 2231116664 in words is "two billion, two hundred thirty-one million, one hundred sixteen thousand, six hundred sixty-four".