43551344023441 has 2 divisors, whose sum is σ = 43551344023442. Its totient is φ = 43551344023440.

The previous prime is 43551344023391. The next prime is 43551344023507. The reversal of 43551344023441 is 14432044315534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40784763827025 + 2766580196416 = 6386295^2 + 1663304^2 .

It is a cyclic number.

It is not a de Polignac number, because 43551344023441 - 2⁹ = 43551344022929 is a prime.

It is a super-2 number, since 2×43551344023441² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43551344023141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21775672011720 + 21775672011721.

It is an arithmetic number, because the mean of its divisors is an integer number (21775672011721).

Almost surely, 2^{43551344023441} is an apocalyptic number.

It is an amenable number.

43551344023441 is a deficient number, since it is larger than the sum of its proper divisors (1).

43551344023441 is an equidigital number, since it uses as much as digits as its factorization.

43551344023441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 43551344023441 its reverse (14432044315534), we get a palindrome (57983388338975).

The spelling of 43551344023441 in words is "forty-three trillion, five hundred fifty-one billion, three hundred forty-four million, twenty-three thousand, four hundred forty-one".