2128444274999 has 8 divisors (see below), whose sum is σ = 2450007799680. Its totient is φ = 1811255764536.

The previous prime is 2128444274989. The next prime is 2128444275007. The reversal of 2128444274999 is 9994724448212.

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

It is a cyclic number.

It is not a de Polignac number, because 2128444274999 - 2²⁰ = 2128443226423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128444274989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093752509 + ... + 1093754454.

It is an arithmetic number, because the mean of its divisors is an integer number (306250974960).

Almost surely, 2^{2128444274999} is an apocalyptic number.

2128444274999 is a deficient number, since it is larger than the sum of its proper divisors (321563524681).

2128444274999 is a wasteful number, since it uses less digits than its factorization.

2128444274999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187507109.

The product of its digits is 83607552, while the sum is 65.

The spelling of 2128444274999 in words is "two trillion, one hundred twenty-eight billion, four hundred forty-four million, two hundred seventy-four thousand, nine hundred ninety-nine".