128981529287183 has 16 divisors (see below), whose sum is σ = 138884275740960. Its totient is φ = 119336097371136.

The previous prime is 128981529287179. The next prime is 128981529287201. The reversal of 128981529287183 is 381782925189821.

It is a cyclic number.

It is not a de Polignac number, because 128981529287183 - 2² = 128981529287179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128981529287183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128981529287153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217387841 + ... + 217980357.

It is an arithmetic number, because the mean of its divisors is an integer number (8680267233810).

Almost surely, 2^{128981529287183} is an apocalyptic number.

128981529287183 is a deficient number, since it is larger than the sum of its proper divisors (9902746453777).

128981529287183 is a wasteful number, since it uses less digits than its factorization.

128981529287183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809626.

The product of its digits is 278691840, while the sum is 74.

The spelling of 128981529287183 in words is "one hundred twenty-eight trillion, nine hundred eighty-one billion, five hundred twenty-nine million, two hundred eighty-seven thousand, one hundred eighty-three".