228565638583 has 2 divisors, whose sum is σ = 228565638584. Its totient is φ = 228565638582.

The previous prime is 228565638551. The next prime is 228565638629. The reversal of 228565638583 is 385836565822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228565638583 - 2⁵ = 228565638551 is a prime.

It is a super-2 number, since 2×228565638583² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228565638883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114282819291 + 114282819292.

It is an arithmetic number, because the mean of its divisors is an integer number (114282819292).

Almost surely, 2^228565638583 is an apocalyptic number.

228565638583 is a deficient number, since it is larger than the sum of its proper divisors (1).

228565638583 is an equidigital number, since it uses as much as digits as its factorization.

228565638583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944000, while the sum is 61.

The spelling of 228565638583 in words is "two hundred twenty-eight billion, five hundred sixty-five million, six hundred thirty-eight thousand, five hundred eighty-three".