2128668441 has 8 divisors (see below), whose sum is σ = 2840124000. Its totient is φ = 1418162592.

The previous prime is 2128668407. The next prime is 2128668461. The reversal of 2128668441 is 1448668212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2128668441 - 2⁷ = 2128668313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2128668393 and 2128668402.

It is not an unprimeable number, because it can be changed into a prime (2128668461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232180 + ... + 241173.

It is an arithmetic number, because the mean of its divisors is an integer number (355015500).

Almost surely, 2^2128668441 is an apocalyptic number.

It is an amenable number.

2128668441 is a deficient number, since it is larger than the sum of its proper divisors (711455559).

2128668441 is a wasteful number, since it uses less digits than its factorization.

2128668441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474855.

The product of its digits is 147456, while the sum is 42.

The square root of 2128668441 is about 46137.4949580057. The cubic root of 2128668441 is about 1286.3801813762.

The spelling of 2128668441 in words is "two billion, one hundred twenty-eight million, six hundred sixty-eight thousand, four hundred forty-one".