255443023441 has 2 divisors, whose sum is σ = 255443023442. Its totient is φ = 255443023440.

The previous prime is 255443023391. The next prime is 255443023477. The reversal of 255443023441 is 144320344552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216042758416 + 39400265025 = 464804^2 + 198495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255443023441 is a prime.

It is a super-2 number, since 2×255443023441² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255443023441.

It is not a weakly prime, because it can be changed into another prime (255443023841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127721511720 + 127721511721.

It is an arithmetic number, because the mean of its divisors is an integer number (127721511721).

Almost surely, 2^255443023441 is an apocalyptic number.

It is an amenable number.

255443023441 is a deficient number, since it is larger than the sum of its proper divisors (1).

255443023441 is an equidigital number, since it uses as much as digits as its factorization.

255443023441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 255443023441 its reverse (144320344552), we get a palindrome (399763367993).

The spelling of 255443023441 in words is "two hundred fifty-five billion, four hundred forty-three million, twenty-three thousand, four hundred forty-one".