128614888636 has 72 divisors (see below), whose sum is σ = 248642899344. Its totient is φ = 58164986880.

The previous prime is 128614888631. The next prime is 128614888637. The reversal of 128614888636 is 636888416821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128614888631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34787140 + ... + 34790836.

It is an arithmetic number, because the mean of its divisors is an integer number (3453373602).

Almost surely, 2^128614888636 is an apocalyptic number.

It is an amenable number.

128614888636 is a deficient number, since it is larger than the sum of its proper divisors (120028010708).

128614888636 is a wasteful number, since it uses less digits than its factorization.

128614888636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751 (or 4736 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 61.

The spelling of 128614888636 in words is "one hundred twenty-eight billion, six hundred fourteen million, eight hundred eighty-eight thousand, six hundred thirty-six".