289443128055 has 16 divisors (see below), whose sum is σ = 487483163520. Its totient is φ = 146244948768.

The previous prime is 289443128053. The next prime is 289443128057. The reversal of 289443128055 is 550821344982.

289443128055 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (289443128053) and next prime (289443128057).

It is not a de Polignac number, because 289443128055 - 2¹ = 289443128053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289443127989 and 289443128007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289443128053) 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, 507794677 + ... + 507795246.

It is an arithmetic number, because the mean of its divisors is an integer number (30467697720).

Almost surely, 2^289443128055 is an apocalyptic number.

289443128055 is a deficient number, since it is larger than the sum of its proper divisors (198040035465).

289443128055 is a wasteful number, since it uses less digits than its factorization.

289443128055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015589950.

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 289443128055 in words is "two hundred eighty-nine billion, four hundred forty-three million, one hundred twenty-eight thousand, fifty-five".