2128512321089 has 24 divisors (see below), whose sum is σ = 2709278379936. Its totient is φ = 1653570072000.

The previous prime is 2128512321079. The next prime is 2128512321107. The reversal of 2128512321089 is 9801232158212.

It is a happy number.

It is not a de Polignac number, because 2128512321089 - 2²⁴ = 2128495543873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128512321049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5786852 + ... + 6143669.

It is an arithmetic number, because the mean of its divisors is an integer number (112886599164).

Almost surely, 2^{2128512321089} is an apocalyptic number.

It is an amenable number.

2128512321089 is a deficient number, since it is larger than the sum of its proper divisors (580766058847).

2128512321089 is a wasteful number, since it uses less digits than its factorization.

2128512321089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930877 (or 11930870 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 2128512321089 in words is "two trillion, one hundred twenty-eight billion, five hundred twelve million, three hundred twenty-one thousand, eighty-nine".