128268028570 has 64 divisors (see below), whose sum is σ = 254652564096. Its totient is φ = 46128660480.

The previous prime is 128268028547. The next prime is 128268028573. The reversal of 128268028570 is 75820862821.

It is not an unprimeable number, because it can be changed into a prime (128268028573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18380922 + ... + 18387898.

It is an arithmetic number, because the mean of its divisors is an integer number (3978946314).

Almost surely, 2^128268028570 is an apocalyptic number.

128268028570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128268028570 is a deficient number, since it is larger than the sum of its proper divisors (126384535526).

128268028570 is a wasteful number, since it uses less digits than its factorization.

128268028570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8815.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 128268028570 in words is "one hundred twenty-eight billion, two hundred sixty-eight million, twenty-eight thousand, five hundred seventy".