128481134699 has 2 divisors, whose sum is σ = 128481134700. Its totient is φ = 128481134698.

The previous prime is 128481134689. The next prime is 128481134713. The reversal of 128481134699 is 996431184821.

It is a weak prime.

It is an emirp because it is prime and its reverse (996431184821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128481134699 - 2⁸ = 128481134443 is a prime.

It is not a weakly prime, because it can be changed into another prime (128481134669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64240567349 + 64240567350.

It is an arithmetic number, because the mean of its divisors is an integer number (64240567350).

Almost surely, 2^128481134699 is an apocalyptic number.

128481134699 is a deficient number, since it is larger than the sum of its proper divisors (1).

128481134699 is an equidigital number, since it uses as much as digits as its factorization.

128481134699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 56.

The spelling of 128481134699 in words is "one hundred twenty-eight billion, four hundred eighty-one million, one hundred thirty-four thousand, six hundred ninety-nine".