2129190486887 has 2 divisors, whose sum is σ = 2129190486888. Its totient is φ = 2129190486886.

The previous prime is 2129190486881. The next prime is 2129190486947. The reversal of 2129190486887 is 7886840919212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2129190486887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129190486881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064595243443 + 1064595243444.

It is an arithmetic number, because the mean of its divisors is an integer number (1064595243444).

Almost surely, 2^{2129190486887} is an apocalyptic number.

2129190486887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129190486887 is an equidigital number, since it uses as much as digits as its factorization.

2129190486887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27869184, while the sum is 65.

The spelling of 2129190486887 in words is "two trillion, one hundred twenty-nine billion, one hundred ninety million, four hundred eighty-six thousand, eight hundred eighty-seven".