2128880782013 has 2 divisors, whose sum is σ = 2128880782014. Its totient is φ = 2128880782012.

The previous prime is 2128880781983. The next prime is 2128880782027. The reversal of 2128880782013 is 3102870888212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1730703375844 + 398177406169 = 1315562^2 + 631013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128880782013 - 2⁸ = 2128880781757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128880782073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064440391006 + 1064440391007.

It is an arithmetic number, because the mean of its divisors is an integer number (1064440391007).

Almost surely, 2^{2128880782013} is an apocalyptic number.

It is an amenable number.

2128880782013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128880782013 is an equidigital number, since it uses as much as digits as its factorization.

2128880782013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 688128, while the sum is 50.

The spelling of 2128880782013 in words is "two trillion, one hundred twenty-eight billion, eight hundred eighty million, seven hundred eighty-two thousand, thirteen".