128505883304 has 8 divisors (see below), whose sum is σ = 240948531210. Its totient is φ = 64252941648.

The previous prime is 128505883283. The next prime is 128505883309. The reversal of 128505883304 is 403388505821.

It can be written as a sum of positive squares in only one way, i.e., 119645426404 + 8860456900 = 345898^2 + 94130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (128505883309) 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 as a sum of consecutive naturals, namely, 8031617699 + ... + 8031617714.

Almost surely, 2^128505883304 is an apocalyptic number.

It is an amenable number.

128505883304 is a deficient number, since it is larger than the sum of its proper divisors (112442647906).

128505883304 is a wasteful number, since it uses less digits than its factorization.

128505883304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16063235419 (or 16063235415 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 128505883304 in words is "one hundred twenty-eight billion, five hundred five million, eight hundred eighty-three thousand, three hundred four".