10128990899 has 2 divisors, whose sum is σ = 10128990900. Its totient is φ = 10128990898.

The previous prime is 10128990889. The next prime is 10128990901. The reversal of 10128990899 is 99809982101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10128990899 - 2²⁰ = 10127942323 is a prime.

Together with 10128990901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10128990869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064495449 + 5064495450.

It is an arithmetic number, because the mean of its divisors is an integer number (5064495450).

Almost surely, 2^10128990899 is an apocalyptic number.

10128990899 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128990899 is an equidigital number, since it uses as much as digits as its factorization.

10128990899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 56.

The spelling of 10128990899 in words is "ten billion, one hundred twenty-eight million, nine hundred ninety thousand, eight hundred ninety-nine".