228663731064906 has 16 divisors (see below), whose sum is σ = 508141624588800. Its totient is φ = 76221243688284.

The previous prime is 228663731064829. The next prime is 228663731064947. The reversal of 228663731064906 is 609460137366822.

228663731064906 is a `hidden beast` number, since 2 + 2 + 8 + 6 + 6 + 37 + 3 + 106 + 490 + 6 = 666.

It is a super-4 number, since 4×228663731064906⁴ (a number of 59 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2117256769066 + ... + 2117256769173.

It is an arithmetic number, because the mean of its divisors is an integer number (31758851536800).

Almost surely, 2^{228663731064906} is an apocalyptic number.

228663731064906 is an abundant number, since it is smaller than the sum of its proper divisors (279477893523894).

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

228663731064906 is a wasteful number, since it uses less digits than its factorization.

228663731064906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234513538250 (or 4234513538244 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 63.

The spelling of 228663731064906 in words is "two hundred twenty-eight trillion, six hundred sixty-three billion, seven hundred thirty-one million, sixty-four thousand, nine hundred six".