672201573128 has 12 divisors (see below), whose sum is σ = 1260382297695. Its totient is φ = 336099627080.

The previous prime is 672201573107. The next prime is 672201573137. The reversal of 672201573128 is 821375102276.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 336100786564 + 336100786564 = 579742^2 + 579742^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=579742.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2174033 + ... + 2463903.

Almost surely, 2^672201573128 is an apocalyptic number.

It is an amenable number.

672201573128 is a deficient number, since it is larger than the sum of its proper divisors (588180724567).

672201573128 is an frugal number, since it uses more digits than its factorization.

672201573128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579748 (or 289873 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 672201573128 in words is "six hundred seventy-two billion, two hundred one million, five hundred seventy-three thousand, one hundred twenty-eight".