2051128788 has 12 divisors (see below), whose sum is σ = 4785967200. Its totient is φ = 683709592.

The previous prime is 2051128787. The next prime is 2051128789. The reversal of 2051128788 is 8878211502.

It is an interprime number because it is at equal distance from previous prime (2051128787) and next prime (2051128789).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051128787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85463688 + ... + 85463711.

It is an arithmetic number, because the mean of its divisors is an integer number (398830600).

Almost surely, 2^2051128788 is an apocalyptic number.

It is an amenable number.

2051128788 is an abundant number, since it is smaller than the sum of its proper divisors (2734838412).

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

2051128788 is a wasteful number, since it uses less digits than its factorization.

2051128788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170927406 (or 170927404 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 2051128788 is about 45289.3893533574. The cubic root of 2051128788 is about 1270.5672106215.

The spelling of 2051128788 in words is "two billion, fifty-one million, one hundred twenty-eight thousand, seven hundred eighty-eight".