228427821677 has 12 divisors (see below), whose sum is σ = 252622221600. Its totient is φ = 206387640360.

The previous prime is 228427821641. The next prime is 228427821697. The reversal of 228427821677 is 776128724822.

It is not a de Polignac number, because 228427821677 - 2⁸ = 228427821421 is a prime.

It is a super-2 number, since 2×228427821677² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228427821697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5771177 + ... + 5810622.

It is an arithmetic number, because the mean of its divisors is an integer number (21051851800).

Almost surely, 2^228427821677 is an apocalyptic number.

It is an amenable number.

228427821677 is a deficient number, since it is larger than the sum of its proper divisors (24194399923).

228427821677 is a wasteful number, since it uses less digits than its factorization.

228427821677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11581984 (or 11581973 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 56.

The spelling of 228427821677 in words is "two hundred twenty-eight billion, four hundred twenty-seven million, eight hundred twenty-one thousand, six hundred seventy-seven".