44221520143513 has 2 divisors, whose sum is σ = 44221520143514. Its totient is φ = 44221520143512.

The previous prime is 44221520143501. The next prime is 44221520143543. The reversal of 44221520143513 is 31534102512244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30328844308569 + 13892675834944 = 5507163^2 + 3727288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44221520143513 is a prime.

It is not a weakly prime, because it can be changed into another prime (44221520143543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22110760071756 + 22110760071757.

It is an arithmetic number, because the mean of its divisors is an integer number (22110760071757).

Almost surely, 2^{44221520143513} is an apocalyptic number.

It is an amenable number.

44221520143513 is a deficient number, since it is larger than the sum of its proper divisors (1).

44221520143513 is an equidigital number, since it uses as much as digits as its factorization.

44221520143513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 44221520143513 its reverse (31534102512244), we get a palindrome (75755622655757).

The spelling of 44221520143513 in words is "forty-four trillion, two hundred twenty-one billion, five hundred twenty million, one hundred forty-three thousand, five hundred thirteen".