2123897568 has 48 divisors (see below), whose sum is σ = 6004098576. Its totient is φ = 653506560.

The previous prime is 2123897561. The next prime is 2123897603. The reversal of 2123897568 is 8657983212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2123897568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123897561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849673 + ... + 852168.

It is an arithmetic number, because the mean of its divisors is an integer number (125085387).

Almost surely, 2^2123897568 is an apocalyptic number.

It is an amenable number.

2123897568 is an abundant number, since it is smaller than the sum of its proper divisors (3880201008).

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

2123897568 is a wasteful number, since it uses less digits than its factorization.

2123897568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701867 (or 1701859 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 2123897568 is about 46085.7631812689. The cubic root of 2123897568 is about 1285.4184303528.

The spelling of 2123897568 in words is "two billion, one hundred twenty-three million, eight hundred ninety-seven thousand, five hundred sixty-eight".