228655276738561 has 16 divisors (see below), whose sum is σ = 231059710811520. Its totient is φ = 226265797480320.

The previous prime is 228655276738519. The next prime is 228655276738571. The reversal of 228655276738561 is 165837672556822.

It is a cyclic number.

It is not a de Polignac number, because 228655276738561 - 2²⁹ = 228654739867649 is a prime.

It is a super-2 number, since 2×228655276738561² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228655276738571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27697996 + ... + 34992706.

It is an arithmetic number, because the mean of its divisors is an integer number (14441231925720).

Almost surely, 2^{228655276738561} is an apocalyptic number.

It is an amenable number.

228655276738561 is a deficient number, since it is larger than the sum of its proper divisors (2404434072959).

228655276738561 is a wasteful number, since it uses less digits than its factorization.

228655276738561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7295736.

The product of its digits is 2032128000, while the sum is 73.

The spelling of 228655276738561 in words is "two hundred twenty-eight trillion, six hundred fifty-five billion, two hundred seventy-six million, seven hundred thirty-eight thousand, five hundred sixty-one".