128337387633 has 80 divisors (see below), whose sum is σ = 236346337920. Its totient is φ = 67582335744.

The previous prime is 128337387623. The next prime is 128337387641. The reversal of 128337387633 is 336783733821.

It is not a de Polignac number, because 128337387633 - 2¹⁰ = 128337386609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128337387633.

It is not an unprimeable number, because it can be changed into a prime (128337387623) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4533798 + ... + 4562016.

It is an arithmetic number, because the mean of its divisors is an integer number (2954329224).

Almost surely, 2^128337387633 is an apocalyptic number.

128337387633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128337387633 is a deficient number, since it is larger than the sum of its proper divisors (108008950287).

128337387633 is a wasteful number, since it uses less digits than its factorization.

128337387633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28868 (or 28859 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The spelling of 128337387633 in words is "one hundred twenty-eight billion, three hundred thirty-seven million, three hundred eighty-seven thousand, six hundred thirty-three".