2129552689 has 12 divisors (see below), whose sum is σ = 2343438720. Its totient is φ = 1933731800.

The previous prime is 2129552653. The next prime is 2129552693. The reversal of 2129552689 is 9862559212.

It is not a de Polignac number, because 2129552689 - 2¹³ = 2129544497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129552189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100572 + ... + 119890.

It is an arithmetic number, because the mean of its divisors is an integer number (195286560).

Almost surely, 2^2129552689 is an apocalyptic number.

It is an amenable number.

2129552689 is a deficient number, since it is larger than the sum of its proper divisors (213886031).

2129552689 is a wasteful number, since it uses less digits than its factorization.

2129552689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20252 (or 20241 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The square root of 2129552689 is about 46147.0767113151. The cubic root of 2129552689 is about 1286.5582773186.

It can be divided in two parts, 21295 and 52689, that added together give a square (73984 = 272²).

The spelling of 2129552689 in words is "two billion, one hundred twenty-nine million, five hundred fifty-two thousand, six hundred eighty-nine".