45565009309 has 2 divisors, whose sum is σ = 45565009310. Its totient is φ = 45565009308.

The previous prime is 45565009253. The next prime is 45565009313. The reversal of 45565009309 is 90390056554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45274477284 + 290532025 = 212778^2 + 17045^2 .

It is a cyclic number.

It is not a de Polignac number, because 45565009309 - 2⁷ = 45565009181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45565109309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22782504654 + 22782504655.

It is an arithmetic number, because the mean of its divisors is an integer number (22782504655).

Almost surely, 2^45565009309 is an apocalyptic number.

It is an amenable number.

45565009309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45565009309 is an equidigital number, since it uses as much as digits as its factorization.

45565009309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729000, while the sum is 46.

The spelling of 45565009309 in words is "forty-five billion, five hundred sixty-five million, nine thousand, three hundred nine".