60505685509 has 2 divisors, whose sum is σ = 60505685510. Its totient is φ = 60505685508.

The previous prime is 60505685503. The next prime is 60505685519. The reversal of 60505685509 is 90558650506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38407376484 + 22098309025 = 195978^2 + 148655^2 .

It is a cyclic number.

It is not a de Polignac number, because 60505685509 - 2³ = 60505685501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60505685501) 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, 30252842754 + 30252842755.

It is an arithmetic number, because the mean of its divisors is an integer number (30252842755).

Almost surely, 2^60505685509 is an apocalyptic number.

It is an amenable number.

60505685509 is a deficient number, since it is larger than the sum of its proper divisors (1).

60505685509 is an equidigital number, since it uses as much as digits as its factorization.

60505685509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620000, while the sum is 49.

The spelling of 60505685509 in words is "sixty billion, five hundred five million, six hundred eighty-five thousand, five hundred nine".