9442243406565 has 48 divisors (see below), whose sum is σ = 16820248653936. Its totient is φ = 4896449049600.

The previous prime is 9442243406513. The next prime is 9442243406599. The reversal of 9442243406565 is 5656043422449.

9442243406565 is a `hidden beast` number, since 9 + 4 + 4 + 224 + 3 + 406 + 5 + 6 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 780747192801 + 8661496213764 = 883599^2 + 2943042^2 .

It is not a de Polignac number, because 9442243406565 - 2³⁶ = 9373523929829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 551275 + ... + 4380455.

It is an arithmetic number, because the mean of its divisors is an integer number (350421846957).

Almost surely, 2^{9442243406565} is an apocalyptic number.

It is an amenable number.

9442243406565 is a deficient number, since it is larger than the sum of its proper divisors (7378005247371).

9442243406565 is a wasteful number, since it uses less digits than its factorization.

9442243406565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830710 (or 3830707 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 54.

The spelling of 9442243406565 in words is "nine trillion, four hundred forty-two billion, two hundred forty-three million, four hundred six thousand, five hundred sixty-five".