128824981564 has 48 divisors (see below), whose sum is σ = 239990839200. Its totient is φ = 60297523200.

The previous prime is 128824981559. The next prime is 128824981589. The reversal of 128824981564 is 465189428821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128824981499 and 128824981508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18535162 + ... + 18542110.

It is an arithmetic number, because the mean of its divisors is an integer number (4999809150).

Almost surely, 2^128824981564 is an apocalyptic number.

It is an amenable number.

128824981564 is a deficient number, since it is larger than the sum of its proper divisors (111165857636).

128824981564 is a wasteful number, since it uses less digits than its factorization.

128824981564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398 (or 8396 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 58.

The spelling of 128824981564 in words is "one hundred twenty-eight billion, eight hundred twenty-four million, nine hundred eighty-one thousand, five hundred sixty-four".