2213456544 has 360 divisors, whose sum is σ = 7321007232. Its totient is φ = 655050240.

The previous prime is 2213456501. The next prime is 2213456549. The reversal of 2213456544 is 4456543122.

2213456544 is a `hidden beast` number, since 2 + 21 + 34 + 565 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2213456499 and 2213456508.

It is not an unprimeable number, because it can be changed into a prime (2213456549) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 13579407 + ... + 13579569.

Almost surely, 2^2213456544 is an apocalyptic number.

2213456544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2213456544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3660503616).

2213456544 is an abundant number, since it is smaller than the sum of its proper divisors (5107550688).

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

2213456544 is a wasteful number, since it uses less digits than its factorization.

2213456544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 212 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 2213456544 is about 47047.3861548120. The cubic root of 2213456544 is about 1303.2377958779.

Adding to 2213456544 its reverse (4456543122), we get a palindrome (6669999666).

The spelling of 2213456544 in words is "two billion, two hundred thirteen million, four hundred fifty-six thousand, five hundred forty-four".