71196748721281 has 2 divisors, whose sum is σ = 71196748721282. Its totient is φ = 71196748721280.

The previous prime is 71196748721233. The next prime is 71196748721317. The reversal of 71196748721281 is 18212784769117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71041449674881 + 155299046400 = 8428609^2 + 394080^2 .

It is a cyclic number.

It is not a de Polignac number, because 71196748721281 - 2¹³ = 71196748713089 is a prime.

It is a super-2 number, since 2×71196748721281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71196748721081) 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, 35598374360640 + 35598374360641.

It is an arithmetic number, because the mean of its divisors is an integer number (35598374360641).

Almost surely, 2^{71196748721281} is an apocalyptic number.

It is an amenable number.

71196748721281 is a deficient number, since it is larger than the sum of its proper divisors (1).

71196748721281 is an equidigital number, since it uses as much as digits as its factorization.

71196748721281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18966528, while the sum is 64.

The spelling of 71196748721281 in words is "seventy-one trillion, one hundred ninety-six billion, seven hundred forty-eight million, seven hundred twenty-one thousand, two hundred eighty-one".