40445143441 has 2 divisors, whose sum is σ = 40445143442. Its totient is φ = 40445143440.

The previous prime is 40445143429. The next prime is 40445143469. The reversal of 40445143441 is 14434154404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29273499025 + 11171644416 = 171095^2 + 105696^2 .

It is a cyclic number.

It is not a de Polignac number, because 40445143441 - 2¹¹ = 40445141393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40445143397 and 40445143406.

It is not a weakly prime, because it can be changed into another prime (40445143471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222571720 + 20222571721.

It is an arithmetic number, because the mean of its divisors is an integer number (20222571721).

Almost surely, 2^40445143441 is an apocalyptic number.

It is an amenable number.

40445143441 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445143441 is an equidigital number, since it uses as much as digits as its factorization.

40445143441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 40445143441 its reverse (14434154404), we get a palindrome (54879297845).

The spelling of 40445143441 in words is "forty billion, four hundred forty-five million, one hundred forty-three thousand, four hundred forty-one".