228660312563 has 4 divisors (see below), whose sum is σ = 228664456608. Its totient is φ = 228656168520.

The previous prime is 228660312553. The next prime is 228660312637. The reversal of 228660312563 is 365213066822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365213066822 = 2 ⋅182606533411.

It is a cyclic number.

It is not a de Polignac number, because 228660312563 - 2⁴ = 228660312547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228660312553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988123 + ... + 2099988.

It is an arithmetic number, because the mean of its divisors is an integer number (57166114152).

Almost surely, 2^228660312563 is an apocalyptic number.

228660312563 is a deficient number, since it is larger than the sum of its proper divisors (4144045).

228660312563 is an equidigital number, since it uses as much as digits as its factorization.

228660312563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144044.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 228660312563 in words is "two hundred twenty-eight billion, six hundred sixty million, three hundred twelve thousand, five hundred sixty-three".