45645245617 has 2 divisors, whose sum is σ = 45645245618. Its totient is φ = 45645245616.

The previous prime is 45645245603. The next prime is 45645245647. The reversal of 45645245617 is 71654254654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44945696016 + 699549601 = 212004^2 + 26449^2 .

It is a cyclic number.

It is not a de Polignac number, because 45645245617 - 2⁷ = 45645245489 is a prime.

It is not a weakly prime, because it can be changed into another prime (45645245647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22822622808 + 22822622809.

It is an arithmetic number, because the mean of its divisors is an integer number (22822622809).

Almost surely, 2^45645245617 is an apocalyptic number.

It is an amenable number.

45645245617 is a deficient number, since it is larger than the sum of its proper divisors (1).

45645245617 is an equidigital number, since it uses as much as digits as its factorization.

45645245617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032000, while the sum is 49.

The spelling of 45645245617 in words is "forty-five billion, six hundred forty-five million, two hundred forty-five thousand, six hundred seventeen".