2123510116056 has 512 divisors, whose sum is σ = 6709443840000. Its totient is φ = 557745979392.

The previous prime is 2123510116043. The next prime is 2123510116081. The reversal of 2123510116056 is 6506110153212.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 1113533455 + ... + 1113535361.

It is an arithmetic number, because the mean of its divisors is an integer number (13104382500).

Almost surely, 2^{2123510116056} 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 2123510116056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3354721920000).

2123510116056 is an abundant number, since it is smaller than the sum of its proper divisors (4585933723944).

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

2123510116056 is a wasteful number, since it uses less digits than its factorization.

2123510116056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 2123510116056 its reverse (6506110153212), we get a palindrome (8629620269268).

The spelling of 2123510116056 in words is "two trillion, one hundred twenty-three billion, five hundred ten million, one hundred sixteen thousand, fifty-six".