228713839778 has 6 divisors (see below), whose sum is σ = 343071774171. Its totient is φ = 114356581722.

The previous prime is 228713839703. The next prime is 228713839787. The reversal of 228713839778 is 877938317822.

It can be written as a sum of positive squares in only one way, i.e., 114356919889 + 114356919889 = 338167^2 + 338167^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338167.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 507251 + ... + 845417.

Almost surely, 2^228713839778 is an apocalyptic number.

228713839778 is a deficient number, since it is larger than the sum of its proper divisors (114357934393).

228713839778 is an frugal number, since it uses more digits than its factorization.

228713839778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676336 (or 338169 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 65.

The spelling of 228713839778 in words is "two hundred twenty-eight billion, seven hundred thirteen million, eight hundred thirty-nine thousand, seven hundred seventy-eight".