2123259688 has 64 divisors (see below), whose sum is σ = 4498053120. Its totient is φ = 930878400.

The previous prime is 2123259667. The next prime is 2123259701. The reversal of 2123259688 is 8869523212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945495 + ... + 947737.

It is an arithmetic number, because the mean of its divisors is an integer number (70282080).

Almost surely, 2^2123259688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123259688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2249026560).

2123259688 is an abundant number, since it is smaller than the sum of its proper divisors (2374793432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123259688 is a wasteful number, since it uses less digits than its factorization.

2123259688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 2634 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 2123259688 is about 46078.8420861462. The cubic root of 2123259688 is about 1285.2897322429.

The spelling of 2123259688 in words is "two billion, one hundred twenty-three million, two hundred fifty-nine thousand, six hundred eighty-eight".