228005760661 has 16 divisors (see below), whose sum is σ = 275064768000. Its totient is φ = 188694414384.

The previous prime is 228005760641. The next prime is 228005760713. The reversal of 228005760661 is 166067500822.

It is not a de Polignac number, because 228005760661 - 2²⁷ = 227871542933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228005760641) 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, 11451085 + ... + 11470978.

It is an arithmetic number, because the mean of its divisors is an integer number (17191548000).

Almost surely, 2^228005760661 is an apocalyptic number.

It is an amenable number.

228005760661 is a deficient number, since it is larger than the sum of its proper divisors (47059007339).

228005760661 is an equidigital number, since it uses as much as digits as its factorization.

228005760661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22922113 (or 22922099 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 228005760661 in words is "two hundred twenty-eight billion, five million, seven hundred sixty thousand, six hundred sixty-one".