128786272684 has 6 divisors (see below), whose sum is σ = 225375977204. Its totient is φ = 64393136340.

The previous prime is 128786272613. The next prime is 128786272697. The reversal of 128786272684 is 486272687821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16098284082 + ... + 16098284089.

Almost surely, 2^128786272684 is an apocalyptic number.

It is an amenable number.

128786272684 is a deficient number, since it is larger than the sum of its proper divisors (96589704520).

128786272684 is a wasteful number, since it uses less digits than its factorization.

128786272684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32196568175 (or 32196568173 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 61.

The spelling of 128786272684 in words is "one hundred twenty-eight billion, seven hundred eighty-six million, two hundred seventy-two thousand, six hundred eighty-four".