44521000000 has 147 divisors (see below), whose sum is σ = 110957388321. Its totient is φ = 17724000000.

The previous prime is 44520999983. The next prime is 44521000037. The reversal of 44521000000 is 12544.

The square root of 44521000000 is 211000.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 39004670016 + 5516329984 = 197496^2 + 74272^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 210999895 + ... + 211000105.

Almost surely, 2^44521000000 is an apocalyptic number.

44521000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

44521000000 is the 211000-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44521000000

44521000000 is an abundant number, since it is smaller than the sum of its proper divisors (66436388321).

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

44521000000 is an frugal number, since it uses more digits than its factorization.

44521000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Multiplying 44521000000 by its sum of digits (16), we get a square (712336000000 = 844000²).

44521000000 divided by its sum of digits (16) gives a square (2782562500 = 52750²).

Adding to 44521000000 its reverse (12544), we get a palindrome (44521012544).

Multiplying 44521000000 by its reverse (12544), we get a square (558471424000000 = 23632000²).

The spelling of 44521000000 in words is "forty-four billion, five hundred twenty-one million", and thus it is an aban number.