128387254801 has 16 divisors (see below), whose sum is σ = 138938708160. Its totient is φ = 117933497280.

The previous prime is 128387254783. The next prime is 128387254817. The reversal of 128387254801 is 108452783821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 128387254801 - 2¹¹ = 128387252753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128387254001) 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 15 ways as a sum of consecutive naturals, for example, 2607630 + ... + 2656408.

It is an arithmetic number, because the mean of its divisors is an integer number (8683669260).

Almost surely, 2^128387254801 is an apocalyptic number.

It is an amenable number.

128387254801 is a deficient number, since it is larger than the sum of its proper divisors (10551453359).

128387254801 is a wasteful number, since it uses less digits than its factorization.

128387254801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49776.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 128387254801 in words is "one hundred twenty-eight billion, three hundred eighty-seven million, two hundred fifty-four thousand, eight hundred one".