71521722683 has 2 divisors, whose sum is σ = 71521722684. Its totient is φ = 71521722682.

The previous prime is 71521722673. The next prime is 71521722709. The reversal of 71521722683 is 38622712517.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71521722683 - 2⁸ = 71521722427 is a prime.

It is not a weakly prime, because it can be changed into another prime (71521722653) 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, 35760861341 + 35760861342.

It is an arithmetic number, because the mean of its divisors is an integer number (35760861342).

Almost surely, 2^71521722683 is an apocalyptic number.

71521722683 is a deficient number, since it is larger than the sum of its proper divisors (1).

71521722683 is an equidigital number, since it uses as much as digits as its factorization.

71521722683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 44.

The spelling of 71521722683 in words is "seventy-one billion, five hundred twenty-one million, seven hundred twenty-two thousand, six hundred eighty-three".