228863948985 has 64 divisors (see below), whose sum is σ = 465215116800. Its totient is φ = 104573638656.

The previous prime is 228863948923. The next prime is 228863948987. The reversal of 228863948985 is 589849368822.

228863948985 is a `hidden beast` number, since 2 + 2 + 8 + 8 + 63 + 9 + 489 + 85 = 666.

It is not a de Polignac number, because 228863948985 - 2⁹ = 228863948473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228863948987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1962801 + ... + 2076129.

It is an arithmetic number, because the mean of its divisors is an integer number (7268986200).

Almost surely, 2^228863948985 is an apocalyptic number.

It is an amenable number.

228863948985 is an abundant number, since it is smaller than the sum of its proper divisors (236351167815).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228863948985 is a wasteful number, since it uses less digits than its factorization.

228863948985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115487 (or 115481 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 72.

The spelling of 228863948985 in words is "two hundred twenty-eight billion, eight hundred sixty-three million, nine hundred forty-eight thousand, nine hundred eighty-five".