71572327493 has 2 divisors, whose sum is σ = 71572327494. Its totient is φ = 71572327492.

The previous prime is 71572327483. The next prime is 71572327511. The reversal of 71572327493 is 39472327517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60374878369 + 11197449124 = 245713^2 + 105818^2 .

It is a cyclic number.

It is not a de Polignac number, because 71572327493 - 2³⁰ = 70498585669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71572327483) 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, 35786163746 + 35786163747.

It is an arithmetic number, because the mean of its divisors is an integer number (35786163747).

Almost surely, 2^71572327493 is an apocalyptic number.

It is an amenable number.

71572327493 is a deficient number, since it is larger than the sum of its proper divisors (1).

71572327493 is an equidigital number, since it uses as much as digits as its factorization.

71572327493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 50.

The spelling of 71572327493 in words is "seventy-one billion, five hundred seventy-two million, three hundred twenty-seven thousand, four hundred ninety-three".