20238229186565 has 16 divisors (see below), whose sum is σ = 26314473376128. Its totient is φ = 14853465792576.

The previous prime is 20238229186543. The next prime is 20238229186631. The reversal of 20238229186565 is 56568192283202.

It is a cyclic number.

It is not a de Polignac number, because 20238229186565 - 2¹⁸ = 20238228924421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955073369 + ... + 955094558.

It is an arithmetic number, because the mean of its divisors is an integer number (1644654586008).

Almost surely, 2^{20238229186565} is an apocalyptic number.

It is an amenable number.

20238229186565 is a deficient number, since it is larger than the sum of its proper divisors (6076244189563).

20238229186565 is a wasteful number, since it uses less digits than its factorization.

20238229186565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910168108.

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 20238229186565 in words is "twenty trillion, two hundred thirty-eight billion, two hundred twenty-nine million, one hundred eighty-six thousand, five hundred sixty-five".