128981000843 has 2 divisors, whose sum is σ = 128981000844. Its totient is φ = 128981000842.

The previous prime is 128981000839. The next prime is 128981000903. The reversal of 128981000843 is 348000189821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128981000843 - 2² = 128981000839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128981000794 and 128981000803.

It is not a weakly prime, because it can be changed into another prime (128981000143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64490500421 + 64490500422.

It is an arithmetic number, because the mean of its divisors is an integer number (64490500422).

Almost surely, 2^128981000843 is an apocalyptic number.

128981000843 is a deficient number, since it is larger than the sum of its proper divisors (1).

128981000843 is an equidigital number, since it uses as much as digits as its factorization.

128981000843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 128981000843 in words is "one hundred twenty-eight billion, nine hundred eighty-one million, eight hundred forty-three", and thus it is an aban number.