2128880782229 has 2 divisors, whose sum is σ = 2128880782230. Its totient is φ = 2128880782228.

The previous prime is 2128880782201. The next prime is 2128880782241. The reversal of 2128880782229 is 9222870888212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797020680900 + 331860101329 = 1340530^2 + 576073^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128880782229 - 2¹² = 2128880778133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128880782129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064440391114 + 1064440391115.

It is an arithmetic number, because the mean of its divisors is an integer number (1064440391115).

Almost surely, 2^{2128880782229} is an apocalyptic number.

It is an amenable number.

2128880782229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128880782229 is an equidigital number, since it uses as much as digits as its factorization.

2128880782229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8257536, while the sum is 59.

The spelling of 2128880782229 in words is "two trillion, one hundred twenty-eight billion, eight hundred eighty million, seven hundred eighty-two thousand, two hundred twenty-nine".