128446831075 has 12 divisors (see below), whose sum is σ = 163578776320. Its totient is φ = 99980235360.

The previous prime is 128446831057. The next prime is 128446831109. The reversal of 128446831075 is 570138644821.

It is not a de Polignac number, because 128446831075 - 2⁵ = 128446831043 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 69429795 + ... + 69431644.

Almost surely, 2^128446831075 is an apocalyptic number.

128446831075 is a deficient number, since it is larger than the sum of its proper divisors (35131945245).

128446831075 is a wasteful number, since it uses less digits than its factorization.

128446831075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138861486 (or 138861481 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 128446831075 in words is "one hundred twenty-eight billion, four hundred forty-six million, eight hundred thirty-one thousand, seventy-five".