128441825878 has 4 divisors (see below), whose sum is σ = 192662738820. Its totient is φ = 64220912938.

The previous prime is 128441825851. The next prime is 128441825893. The reversal of 128441825878 is 878528144821.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32110456468 + ... + 32110456471.

It is an arithmetic number, because the mean of its divisors is an integer number (48165684705).

Almost surely, 2^128441825878 is an apocalyptic number.

128441825878 is a deficient number, since it is larger than the sum of its proper divisors (64220912942).

128441825878 is an equidigital number, since it uses as much as digits as its factorization.

128441825878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64220912941.

The product of its digits is 9175040, while the sum is 58.

The spelling of 128441825878 in words is "one hundred twenty-eight billion, four hundred forty-one million, eight hundred twenty-five thousand, eight hundred seventy-eight".