44020105431521 has 6 divisors (see below), whose sum is σ = 44648839336866. Its totient is φ = 43400103941600.

The previous prime is 44020105431391. The next prime is 44020105431553. The reversal of 44020105431521 is 12513450102044.

It can be written as a sum of positive squares in only one way, i.e., 42189753492496 + 1830351939025 = 6495364^2 + 1352905^2 .

It is not a de Polignac number, because 44020105431521 - 2¹⁴ = 44020105415137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44020105491521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4366202600 + ... + 4366212681.

It is an arithmetic number, because the mean of its divisors is an integer number (7441473222811).

Almost surely, 2^{44020105431521} is an apocalyptic number.

It is an amenable number.

44020105431521 is a deficient number, since it is larger than the sum of its proper divisors (628733905345).

44020105431521 is an frugal number, since it uses more digits than its factorization.

44020105431521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732415423 (or 8732415352 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 44020105431521 its reverse (12513450102044), we get a palindrome (56533555533565).

The spelling of 44020105431521 in words is "forty-four trillion, twenty billion, one hundred five million, four hundred thirty-one thousand, five hundred twenty-one".