128654880387 has 16 divisors (see below), whose sum is σ = 190306143360. Its totient is φ = 76651083200.

The previous prime is 128654880379. The next prime is 128654880413. The reversal of 128654880387 is 783088456821.

It is a cyclic number.

It is not a de Polignac number, because 128654880387 - 2³ = 128654880379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128654880387.

It is not an unprimeable number, because it can be changed into a prime (128654830387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33037314 + ... + 33041207.

It is an arithmetic number, because the mean of its divisors is an integer number (11894133960).

Almost surely, 2^128654880387 is an apocalyptic number.

128654880387 is a deficient number, since it is larger than the sum of its proper divisors (61651262973).

128654880387 is a wasteful number, since it uses less digits than its factorization.

128654880387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66078594.

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 128654880387 in words is "one hundred twenty-eight billion, six hundred fifty-four million, eight hundred eighty thousand, three hundred eighty-seven".