128336568838 has 8 divisors (see below), whose sum is σ = 195767647560. Its totient is φ = 63080686320.

The previous prime is 128336568761. The next prime is 128336568839. The reversal of 128336568838 is 838865633821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128336568838² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128336568839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543798903 + ... + 543799138.

It is an arithmetic number, because the mean of its divisors is an integer number (24470955945).

Almost surely, 2^128336568838 is an apocalyptic number.

128336568838 is a deficient number, since it is larger than the sum of its proper divisors (67431078722).

128336568838 is a wasteful number, since it uses less digits than its factorization.

128336568838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087598102.

The product of its digits is 39813120, while the sum is 61.

The spelling of 128336568838 in words is "one hundred twenty-eight billion, three hundred thirty-six million, five hundred sixty-eight thousand, eight hundred thirty-eight".