128518143538 has 16 divisors (see below), whose sum is σ = 199489752000. Its totient is φ = 62023005072.

The previous prime is 128518143527. The next prime is 128518143539. The reversal of 128518143538 is 835341815821.

It is a junction number, because it is equal to n+sod(n) for n = 128518143491 and 128518143500.

It is not an unprimeable number, because it can be changed into a prime (128518143539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181248 + ... + 538411.

It is an arithmetic number, because the mean of its divisors is an integer number (12468109500).

Almost surely, 2^128518143538 is an apocalyptic number.

128518143538 is a deficient number, since it is larger than the sum of its proper divisors (70971608462).

128518143538 is a wasteful number, since it uses less digits than its factorization.

128518143538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722769.

The product of its digits is 921600, while the sum is 49.

The spelling of 128518143538 in words is "one hundred twenty-eight billion, five hundred eighteen million, one hundred forty-three thousand, five hundred thirty-eight".