442234636252565 has 16 divisors (see below), whose sum is σ = 571503665417328. Its totient is φ = 326573016600576.

The previous prime is 442234636252559. The next prime is 442234636252567. The reversal of 442234636252565 is 565252636432244.

It can be written as a sum of positive squares in 8 ways, for example, as 33806340319684 + 408428295932881 = 5814322^2 + 20209609^2 .

It is a cyclic number.

It is not a de Polignac number, because 442234636252565 - 2³⁰ = 442233562510741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442234636252567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144329399 + ... + 147361611.

It is an arithmetic number, because the mean of its divisors is an integer number (35718979088583).

Almost surely, 2^{442234636252565} is an apocalyptic number.

It is an amenable number.

442234636252565 is a deficient number, since it is larger than the sum of its proper divisors (129269029164763).

442234636252565 is a wasteful number, since it uses less digits than its factorization.

442234636252565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276008.

The product of its digits is 248832000, while the sum is 59.

The spelling of 442234636252565 in words is "four hundred forty-two trillion, two hundred thirty-four billion, six hundred thirty-six million, two hundred fifty-two thousand, five hundred sixty-five".