10128990913 has 2 divisors, whose sum is σ = 10128990914. Its totient is φ = 10128990912.

The previous prime is 10128990901. The next prime is 10128990917. The reversal of 10128990913 is 31909982101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5850261169 + 4278729744 = 76487^2 + 65412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10128990913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10128990913.

It is not a weakly prime, because it can be changed into another prime (10128990917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064495456 + 5064495457.

It is an arithmetic number, because the mean of its divisors is an integer number (5064495457).

Almost surely, 2^10128990913 is an apocalyptic number.

It is an amenable number.

10128990913 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128990913 is an equidigital number, since it uses as much as digits as its factorization.

10128990913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 10128990913 in words is "ten billion, one hundred twenty-eight million, nine hundred ninety thousand, nine hundred thirteen".