228643506433 has 2 divisors, whose sum is σ = 228643506434. Its totient is φ = 228643506432.

The previous prime is 228643506401. The next prime is 228643506503. The reversal of 228643506433 is 334605346822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192889612864 + 35753893569 = 439192^2 + 189087^2 .

It is a cyclic number.

It is not a de Polignac number, because 228643506433 - 2⁵ = 228643506401 is a prime.

It is not a weakly prime, because it can be changed into another prime (228643506733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114321753216 + 114321753217.

It is an arithmetic number, because the mean of its divisors is an integer number (114321753217).

Almost surely, 2^228643506433 is an apocalyptic number.

It is an amenable number.

228643506433 is a deficient number, since it is larger than the sum of its proper divisors (1).

228643506433 is an equidigital number, since it uses as much as digits as its factorization.

228643506433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 46.

The spelling of 228643506433 in words is "two hundred twenty-eight billion, six hundred forty-three million, five hundred six thousand, four hundred thirty-three".