71228404441 has 2 divisors, whose sum is σ = 71228404442. Its totient is φ = 71228404440.

The previous prime is 71228404367. The next prime is 71228404453. The reversal of 71228404441 is 14440482217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71056899225 + 171505216 = 266565^2 + 13096^2 .

It is a cyclic number.

It is not a de Polignac number, because 71228404441 - 2⁹ = 71228403929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71228404441.

It is not a weakly prime, because it can be changed into another prime (71228404141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35614202220 + 35614202221.

It is an arithmetic number, because the mean of its divisors is an integer number (35614202221).

Almost surely, 2^71228404441 is an apocalyptic number.

It is an amenable number.

71228404441 is a deficient number, since it is larger than the sum of its proper divisors (1).

71228404441 is an equidigital number, since it uses as much as digits as its factorization.

71228404441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57344, while the sum is 37.

Adding to 71228404441 its reverse (14440482217), we get a palindrome (85668886658).

The spelling of 71228404441 in words is "seventy-one billion, two hundred twenty-eight million, four hundred four thousand, four hundred forty-one".