10021530444 has 24 divisors (see below), whose sum is σ = 23881095168. Its totient is φ = 3269435280.

The previous prime is 10021530443. The next prime is 10021530451. The reversal of 10021530444 is 44403512001.

It is not an unprimeable number, because it can be changed into a prime (10021530443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8883772 + ... + 8884899.

It is an arithmetic number, because the mean of its divisors is an integer number (995045632).

Almost surely, 2^10021530444 is an apocalyptic number.

It is an amenable number.

10021530444 is an abundant number, since it is smaller than the sum of its proper divisors (13859564724).

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

10021530444 is a wasteful number, since it uses less digits than its factorization.

10021530444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17768725 (or 17768723 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The spelling of 10021530444 in words is "ten billion, twenty-one million, five hundred thirty thousand, four hundred forty-four".