20530424002565 has 16 divisors (see below), whose sum is σ = 25162080451200. Its totient is φ = 16077588996672.

The previous prime is 20530424002531. The next prime is 20530424002579. The reversal of 20530424002565 is 56520042403502.

It is a cyclic number.

It is not a de Polignac number, because 20530424002565 - 2¹⁰ = 20530424001541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226885505 + ... + 226975974.

It is an arithmetic number, because the mean of its divisors is an integer number (1572630028200).

Almost surely, 2^{20530424002565} is an apocalyptic number.

It is an amenable number.

20530424002565 is a deficient number, since it is larger than the sum of its proper divisors (4631656448635).

20530424002565 is a wasteful number, since it uses less digits than its factorization.

20530424002565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453861676.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 20530424002565 in words is "twenty trillion, five hundred thirty billion, four hundred twenty-four million, two thousand, five hundred sixty-five".