128480585949 has 12 divisors (see below), whose sum is σ = 187932222400. Its totient is φ = 84569499144.

The previous prime is 128480585941. The next prime is 128480585977. The reversal of 128480585949 is 949585084821.

128480585949 is a `hidden beast` number, since 1 + 2 + 8 + 4 + 8 + 0 + 585 + 9 + 49 = 666.

It is not a de Polignac number, because 128480585949 - 2³ = 128480585941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128480585941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90351319 + ... + 90352740.

Almost surely, 2^128480585949 is an apocalyptic number.

It is an amenable number.

128480585949 is a deficient number, since it is larger than the sum of its proper divisors (59451636451).

128480585949 is a wasteful number, since it uses less digits than its factorization.

128480585949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180704144 (or 180704141 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 63.

The spelling of 128480585949 in words is "one hundred twenty-eight billion, four hundred eighty million, five hundred eighty-five thousand, nine hundred forty-nine".