128528421076 has 36 divisors (see below), whose sum is σ = 247944128544. Its totient is φ = 58253570320.

The previous prime is 128528421071. The next prime is 128528421089. The reversal of 128528421076 is 670124825821.

128528421076 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 not an unprimeable number, because it can be changed into a prime (128528421071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214696 + ... + 550591.

It is an arithmetic number, because the mean of its divisors is an integer number (6887336904).

Almost surely, 2^128528421076 is an apocalyptic number.

It is an amenable number.

128528421076 is a deficient number, since it is larger than the sum of its proper divisors (119415707468).

128528421076 is a wasteful number, since it uses less digits than its factorization.

128528421076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765660 (or 765647 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 128528421076 in words is "one hundred twenty-eight billion, five hundred twenty-eight million, four hundred twenty-one thousand, seventy-six".