5645485613609 has 2 divisors, whose sum is σ = 5645485613610. Its totient is φ = 5645485613608.

The previous prime is 5645485613591. The next prime is 5645485613617. The reversal of 5645485613609 is 9063165845465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4385191987225 + 1260293626384 = 2094085^2 + 1122628^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645485613609 - 2³² = 5641190646313 is a prime.

It is not a weakly prime, because it can be changed into another prime (5645485613639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822742806804 + 2822742806805.

It is an arithmetic number, because the mean of its divisors is an integer number (2822742806805).

Almost surely, 2^{5645485613609} is an apocalyptic number.

It is an amenable number.

5645485613609 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645485613609 is an equidigital number, since it uses as much as digits as its factorization.

5645485613609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312000, while the sum is 62.

The spelling of 5645485613609 in words is "five trillion, six hundred forty-five billion, four hundred eighty-five million, six hundred thirteen thousand, six hundred nine".