128494843806 has 16 divisors (see below), whose sum is σ = 293702500224. Its totient is φ = 36712812504.

The previous prime is 128494843787. The next prime is 128494843811. The reversal of 128494843806 is 608348494821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529700480 + ... + 1529700563.

It is an arithmetic number, because the mean of its divisors is an integer number (18356406264).

Almost surely, 2^128494843806 is an apocalyptic number.

128494843806 is an abundant number, since it is smaller than the sum of its proper divisors (165207656418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128494843806 is a wasteful number, since it uses less digits than its factorization.

128494843806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059401055.

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 128494843806 in words is "one hundred twenty-eight billion, four hundred ninety-four million, eight hundred forty-three thousand, eight hundred six".