128489807032 has 24 divisors (see below), whose sum is σ = 244359473400. Its totient is φ = 63340025840.

The previous prime is 128489807009. The next prime is 128489807051. The reversal of 128489807032 is 230708984821.

It is a happy number.

It is a super-2 number, since 2×128489807032² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1552732 + ... + 1633387.

It is an arithmetic number, because the mean of its divisors is an integer number (10181644725).

Almost surely, 2^128489807032 is an apocalyptic number.

It is an amenable number.

128489807032 is a deficient number, since it is larger than the sum of its proper divisors (115869666368).

128489807032 is an equidigital number, since it uses as much as digits as its factorization.

128489807032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186267 (or 3186192 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 128489807032 in words is "one hundred twenty-eight billion, four hundred eighty-nine million, eight hundred seven thousand, thirty-two".