228442640563 has 2 divisors, whose sum is σ = 228442640564. Its totient is φ = 228442640562.

The previous prime is 228442640471. The next prime is 228442640603. The reversal of 228442640563 is 365046244822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228442640563 - 2³⁷ = 91003687091 is a prime.

It is not a weakly prime, because it can be changed into another prime (228442640863) by changing a digit.

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 as a sum of consecutive naturals, namely, 114221320281 + 114221320282.

It is an arithmetic number, because the mean of its divisors is an integer number (114221320282).

Almost surely, 2^228442640563 is an apocalyptic number.

228442640563 is a deficient number, since it is larger than the sum of its proper divisors (1).

228442640563 is an equidigital number, since it uses as much as digits as its factorization.

228442640563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2211840, while the sum is 46.

The spelling of 228442640563 in words is "two hundred twenty-eight billion, four hundred forty-two million, six hundred forty thousand, five hundred sixty-three".