20238795565 has 8 divisors (see below), whose sum is σ = 24477788160. Its totient is φ = 16063547472.

The previous prime is 20238795539. The next prime is 20238795571. The reversal of 20238795565 is 56559783202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20238795565 - 2²³ = 20230406957 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 7 ways as a sum of consecutive naturals, for example, 15935425 + ... + 15936694.

It is an arithmetic number, because the mean of its divisors is an integer number (3059723520).

Almost surely, 2^20238795565 is an apocalyptic number.

It is an amenable number.

20238795565 is a deficient number, since it is larger than the sum of its proper divisors (4238992595).

20238795565 is a wasteful number, since it uses less digits than its factorization.

20238795565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31872251.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 20238795565 in words is "twenty billion, two hundred thirty-eight million, seven hundred ninety-five thousand, five hundred sixty-five".