56165505500609 has 2 divisors, whose sum is σ = 56165505500610. Its totient is φ = 56165505500608.

The previous prime is 56165505500581. The next prime is 56165505500617. The reversal of 56165505500609 is 90600550556165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54368458009009 + 1797047491600 = 7373497^2 + 1340540^2 .

It is a cyclic number.

It is not a de Polignac number, because 56165505500609 - 2⁴⁰ = 55065993872833 is a prime.

It is not a weakly prime, because it can be changed into another prime (56165505500509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28082752750304 + 28082752750305.

It is an arithmetic number, because the mean of its divisors is an integer number (28082752750305).

Almost surely, 2^{56165505500609} is an apocalyptic number.

It is an amenable number.

56165505500609 is a deficient number, since it is larger than the sum of its proper divisors (1).

56165505500609 is an equidigital number, since it uses as much as digits as its factorization.

56165505500609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075000, while the sum is 53.

The spelling of 56165505500609 in words is "fifty-six trillion, one hundred sixty-five billion, five hundred five million, five hundred thousand, six hundred nine".