71448103681 has 2 divisors, whose sum is σ = 71448103682. Its totient is φ = 71448103680.

The previous prime is 71448103679. The next prime is 71448103759. The reversal of 71448103681 is 18630184417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71204119281 + 243984400 = 266841^2 + 15620^2 .

It is a cyclic number.

It is not a de Polignac number, because 71448103681 - 2¹ = 71448103679 is a prime.

It is a super-2 number, since 2×71448103681² (a number of 23 digits) contains 22 as substring.

Together with 71448103679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71448103621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35724051840 + 35724051841.

It is an arithmetic number, because the mean of its divisors is an integer number (35724051841).

Almost surely, 2^71448103681 is an apocalyptic number.

It is an amenable number.

71448103681 is a deficient number, since it is larger than the sum of its proper divisors (1).

71448103681 is an equidigital number, since it uses as much as digits as its factorization.

71448103681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 71448103681 in words is "seventy-one billion, four hundred forty-eight million, one hundred three thousand, six hundred eighty-one".