128900689654 has 8 divisors (see below), whose sum is σ = 210928401288. Its totient is φ = 58591222560.

The previous prime is 128900689627. The next prime is 128900689663. The reversal of 128900689654 is 456986009821.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2929561107 + ... + 2929561150.

It is an arithmetic number, because the mean of its divisors is an integer number (26366050161).

Almost surely, 2^128900689654 is an apocalyptic number.

128900689654 is a deficient number, since it is larger than the sum of its proper divisors (82027711634).

128900689654 is a wasteful number, since it uses less digits than its factorization.

128900689654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859122270.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 128900689654 in words is "one hundred twenty-eight billion, nine hundred million, six hundred eighty-nine thousand, six hundred fifty-four".