128707890544 has 20 divisors (see below), whose sum is σ = 249411650224. Its totient is φ = 64343593728.

The previous prime is 128707890529. The next prime is 128707890601. The reversal of 128707890544 is 445098707821.

128707890544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543897 + ... + 743800.

Almost surely, 2^128707890544 is an apocalyptic number.

It is an amenable number.

128707890544 is a deficient number, since it is larger than the sum of its proper divisors (120703759680).

128707890544 is a wasteful number, since it uses less digits than its factorization.

128707890544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293952 (or 1293946 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 128707890544 in words is "one hundred twenty-eight billion, seven hundred seven million, eight hundred ninety thousand, five hundred forty-four".