7221783744 has 280 divisors, whose sum is σ = 24819303168. Its totient is φ = 2033579520.

The previous prime is 7221783743. The next prime is 7221783749. The reversal of 7221783744 is 4473871227.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 7221783744.

It is not an unprimeable number, because it can be changed into a prime (7221783743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2575047 + ... + 2577849.

Almost surely, 2^7221783744 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 7221783744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12409651584).

7221783744 is an abundant number, since it is smaller than the sum of its proper divisors (17597519424).

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

7221783744 is a wasteful number, since it uses less digits than its factorization.

7221783744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2886 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 7221783744 is about 84981.0787410939. The cubic root of 7221783744 is about 1932.9242134968.

It can be divided in two parts, 72217 and 83744, that added together give a triangular number (155961 = T₅₅₈).

The spelling of 7221783744 in words is "seven billion, two hundred twenty-one million, seven hundred eighty-three thousand, seven hundred forty-four".