128252889406 has 8 divisors (see below), whose sum is σ = 202504562280. Its totient is φ = 60751368648.

The previous prime is 128252889367. The next prime is 128252889439. The reversal of 128252889406 is 604988252821.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687537981 + ... + 1687538056.

It is an arithmetic number, because the mean of its divisors is an integer number (25313070285).

Almost surely, 2^128252889406 is an apocalyptic number.

128252889406 is a deficient number, since it is larger than the sum of its proper divisors (74251672874).

128252889406 is a wasteful number, since it uses less digits than its factorization.

128252889406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375076058.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 128252889406 in words is "one hundred twenty-eight billion, two hundred fifty-two million, eight hundred eighty-nine thousand, four hundred six".