44221618530 has 24 divisors (see below), whose sum is σ = 114976208412. Its totient is φ = 11792431584.

The previous prime is 44221618423. The next prime is 44221618531. The reversal of 44221618530 is 3581612244.

It is a happy number.

44221618530 is a `hidden beast` number, since 4 + 4 + 2 + 2 + 1 + 618 + 5 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39012965289 + 5208653241 = 197517^2 + 72171^2 .

It is not an unprimeable number, because it can be changed into a prime (44221618531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245675569 + ... + 245675748.

Almost surely, 2^44221618530 is an apocalyptic number.

44221618530 is an abundant number, since it is smaller than the sum of its proper divisors (70754589882).

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

44221618530 is a wasteful number, since it uses less digits than its factorization.

44221618530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491351330 (or 491351327 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 44221618530 in words is "forty-four billion, two hundred twenty-one million, six hundred eighteen thousand, five hundred thirty".