228173265659 has 2 divisors, whose sum is σ = 228173265660. Its totient is φ = 228173265658.

The previous prime is 228173265623. The next prime is 228173265709. The reversal of 228173265659 is 956562371822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228173265659 is a prime.

It is a super-2 number, since 2×228173265659² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228173225659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114086632829 + 114086632830.

It is an arithmetic number, because the mean of its divisors is an integer number (114086632830).

Almost surely, 2^228173265659 is an apocalyptic number.

228173265659 is a deficient number, since it is larger than the sum of its proper divisors (1).

228173265659 is an equidigital number, since it uses as much as digits as its factorization.

228173265659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 56.

The spelling of 228173265659 in words is "two hundred twenty-eight billion, one hundred seventy-three million, two hundred sixty-five thousand, six hundred fifty-nine".