128575446732 has 18 divisors (see below), whose sum is σ = 325010157108. Its totient is φ = 42858482232.

The previous prime is 128575446709. The next prime is 128575446739. The reversal of 128575446732 is 237644575821.

128575446732 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 7 + 544 + 67 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (128575446739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1785770058 + ... + 1785770129.

Almost surely, 2^128575446732 is an apocalyptic number.

128575446732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128575446732 is an abundant number, since it is smaller than the sum of its proper divisors (196434710376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128575446732 is a wasteful number, since it uses less digits than its factorization.

128575446732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571540197 (or 3571540192 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 128575446732 in words is "one hundred twenty-eight billion, five hundred seventy-five million, four hundred forty-six thousand, seven hundred thirty-two".