128113606528 has 32 divisors (see below), whose sum is σ = 255522288960. Its totient is φ = 63982522368.

The previous prime is 128113606493. The next prime is 128113606531. The reversal of 128113606528 is 825606311821.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×128113606528² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469425 + ... + 690352.

It is an arithmetic number, because the mean of its divisors is an integer number (7985071530).

Almost surely, 2^128113606528 is an apocalyptic number.

It is an amenable number.

128113606528 is a deficient number, since it is larger than the sum of its proper divisors (127408682432).

128113606528 is an equidigital number, since it uses as much as digits as its factorization.

128113606528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160654 (or 1160642 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 128113606528 in words is "one hundred twenty-eight billion, one hundred thirteen million, six hundred six thousand, five hundred twenty-eight".