71276325521 has 2 divisors, whose sum is σ = 71276325522. Its totient is φ = 71276325520.

The previous prime is 71276325499. The next prime is 71276325529. The reversal of 71276325521 is 12552367217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71203051921 + 73273600 = 266839^2 + 8560^2 .

It is a cyclic number.

It is not a de Polignac number, because 71276325521 - 2⁶ = 71276325457 is a prime.

It is not a weakly prime, because it can be changed into another prime (71276325529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35638162760 + 35638162761.

It is an arithmetic number, because the mean of its divisors is an integer number (35638162761).

Almost surely, 2^71276325521 is an apocalyptic number.

It is an amenable number.

71276325521 is a deficient number, since it is larger than the sum of its proper divisors (1).

71276325521 is an equidigital number, since it uses as much as digits as its factorization.

71276325521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 41.

The spelling of 71276325521 in words is "seventy-one billion, two hundred seventy-six million, three hundred twenty-five thousand, five hundred twenty-one".