128985793843 has 2 divisors, whose sum is σ = 128985793844. Its totient is φ = 128985793842.

The previous prime is 128985793837. The next prime is 128985793861. The reversal of 128985793843 is 348397589821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128985793843 - 2⁹ = 128985793331 is a prime.

It is not a weakly prime, because it can be changed into another prime (128985793813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64492896921 + 64492896922.

It is an arithmetic number, because the mean of its divisors is an integer number (64492896922).

Almost surely, 2^128985793843 is an apocalyptic number.

128985793843 is a deficient number, since it is larger than the sum of its proper divisors (1).

128985793843 is an equidigital number, since it uses as much as digits as its factorization.

128985793843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104509440, while the sum is 67.

The spelling of 128985793843 in words is "one hundred twenty-eight billion, nine hundred eighty-five million, seven hundred ninety-three thousand, eight hundred forty-three".