128750998811 has 2 divisors, whose sum is σ = 128750998812. Its totient is φ = 128750998810.

The previous prime is 128750998807. The next prime is 128750998847. The reversal of 128750998811 is 118899057821.

It is a weak prime.

It is an emirp because it is prime and its reverse (118899057821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128750998811 - 2² = 128750998807 is a prime.

It is not a weakly prime, because it can be changed into another prime (128750998801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64375499405 + 64375499406.

It is an arithmetic number, because the mean of its divisors is an integer number (64375499406).

Almost surely, 2^128750998811 is an apocalyptic number.

128750998811 is a deficient number, since it is larger than the sum of its proper divisors (1).

128750998811 is an equidigital number, since it uses as much as digits as its factorization.

128750998811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 59.

The spelling of 128750998811 in words is "one hundred twenty-eight billion, seven hundred fifty million, nine hundred ninety-eight thousand, eight hundred eleven".