4421520000 has 640 divisors, whose sum is σ = 17206992000. Its totient is φ = 1115136000.

The previous prime is 4421519989. The next prime is 4421520007. The reversal of 4421520000 is 251244.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-2 number, since 2×4421520000² = 39099678220800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (4421520007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 49679956 + ... + 49680044.

It is an arithmetic number, because the mean of its divisors is an integer number (26885925).

Almost surely, 2^4421520000 is an apocalyptic number.

4421520000 is a gapful number since it is divisible by the number (40) 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 4421520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8603496000).

4421520000 is an abundant number, since it is smaller than the sum of its proper divisors (12785472000).

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

4421520000 is an equidigital number, since it uses as much as digits as its factorization.

4421520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4421520000 is about 66494.5110516650. The cubic root of 4421520000 is about 1641.3096815692.

Adding to 4421520000 its reverse (251244), we get a palindrome (4421771244).

The spelling of 4421520000 in words is "four billion, four hundred twenty-one million, five hundred twenty thousand".