4240561565 has 4 divisors (see below), whose sum is σ = 5088673884. Its totient is φ = 3392449248.

The previous prime is 4240561561. The next prime is 4240561597. The reversal of 4240561565 is 5651650424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 733434724 + 3507126841 = 27082^2 + 59221^2 .

It is a cyclic number.

It is not a de Polignac number, because 4240561565 - 2² = 4240561561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240561561) 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 in 3 ways as a sum of consecutive naturals, for example, 424056152 + ... + 424056161.

It is an arithmetic number, because the mean of its divisors is an integer number (1272168471).

Almost surely, 2^4240561565 is an apocalyptic number.

It is an amenable number.

4240561565 is a deficient number, since it is larger than the sum of its proper divisors (848112319).

4240561565 is an equidigital number, since it uses as much as digits as its factorization.

4240561565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848112318.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 4240561565 is about 65119.5943245963. The cubic root of 4240561565 is about 1618.6059191290.

The spelling of 4240561565 in words is "four billion, two hundred forty million, five hundred sixty-one thousand, five hundred sixty-five".