44345131133521 has 2 divisors, whose sum is σ = 44345131133522. Its totient is φ = 44345131133520.

The previous prime is 44345131133507. The next prime is 44345131133533. The reversal of 44345131133521 is 12533113154344.

44345131133521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38983539942400 + 5361591191121 = 6243680^2 + 2315511^2 .

It is a cyclic number.

It is not a de Polignac number, because 44345131133521 - 2⁵ = 44345131133489 is a prime.

It is not a weakly prime, because it can be changed into another prime (44345131133581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22172565566760 + 22172565566761.

It is an arithmetic number, because the mean of its divisors is an integer number (22172565566761).

Almost surely, 2^{44345131133521} is an apocalyptic number.

It is an amenable number.

44345131133521 is a deficient number, since it is larger than the sum of its proper divisors (1).

44345131133521 is an equidigital number, since it uses as much as digits as its factorization.

44345131133521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 40.

Adding to 44345131133521 its reverse (12533113154344), we get a palindrome (56878244287865).

The spelling of 44345131133521 in words is "forty-four trillion, three hundred forty-five billion, one hundred thirty-one million, one hundred thirty-three thousand, five hundred twenty-one".