128053240686 has 80 divisors (see below), whose sum is σ = 332417035104. Its totient is φ = 36085430016.

The previous prime is 128053240583. The next prime is 128053240691. The reversal of 128053240686 is 686042350821.

128053240686 is a `hidden beast` number, since 1 + 280 + 53 + 240 + 6 + 86 = 666.

It is a congruent 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 in 39 ways as a sum of consecutive naturals, for example, 690655 + ... + 856218.

Almost surely, 2^128053240686 is an apocalyptic number.

128053240686 is an abundant number, since it is smaller than the sum of its proper divisors (204363794418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128053240686 is a wasteful number, since it uses less digits than its factorization.

128053240686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546967 (or 1546958 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 128053240686 in words is "one hundred twenty-eight billion, fifty-three million, two hundred forty thousand, six hundred eighty-six".