44431005521 has 8 divisors (see below), whose sum is σ = 51858681600. Its totient is φ = 37273426848.

The previous prime is 44431005497. The next prime is 44431005539. The reversal of 44431005521 is 12550013444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44431005521 - 2⁶ = 44431005457 is a prime.

It is a super-2 number, since 2×44431005521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44431005551) 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 7 ways as a sum of consecutive naturals, for example, 67523996 + ... + 67524653.

It is an arithmetic number, because the mean of its divisors is an integer number (6482335200).

Almost surely, 2^44431005521 is an apocalyptic number.

It is an amenable number.

44431005521 is a deficient number, since it is larger than the sum of its proper divisors (7427676079).

44431005521 is a wasteful number, since it uses less digits than its factorization.

44431005521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135048703.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 44431005521 its reverse (12550013444), we get a palindrome (56981018965).

The spelling of 44431005521 in words is "forty-four billion, four hundred thirty-one million, five thousand, five hundred twenty-one".