71800580513 has 2 divisors, whose sum is σ = 71800580514. Its totient is φ = 71800580512.

The previous prime is 71800580507. The next prime is 71800580563. The reversal of 71800580513 is 31508500817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69586219264 + 2214361249 = 263792^2 + 47057^2 .

It is a cyclic number.

It is not a de Polignac number, because 71800580513 - 2⁴ = 71800580497 is a prime.

It is not a weakly prime, because it can be changed into another prime (71800580563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35900290256 + 35900290257.

It is an arithmetic number, because the mean of its divisors is an integer number (35900290257).

Almost surely, 2^71800580513 is an apocalyptic number.

It is an amenable number.

71800580513 is a deficient number, since it is larger than the sum of its proper divisors (1).

71800580513 is an equidigital number, since it uses as much as digits as its factorization.

71800580513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 38.

The spelling of 71800580513 in words is "seventy-one billion, eight hundred million, five hundred eighty thousand, five hundred thirteen".