7128720603 has 16 divisors (see below), whose sum is σ = 10614684960. Its totient is φ = 4728352608.

The previous prime is 7128720601. The next prime is 7128720631. The reversal of 7128720603 is 3060278217.

7128720603 is a `hidden beast` number, since 7 + 1 + 28 + 7 + 20 + 603 = 666.

It is not a de Polignac number, because 7128720603 - 2¹ = 7128720601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7128720601) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 664800 + ... + 675437.

It is an arithmetic number, because the mean of its divisors is an integer number (663417810).

Almost surely, 2^7128720603 is an apocalyptic number.

7128720603 is a deficient number, since it is larger than the sum of its proper divisors (3485964357).

7128720603 is a wasteful number, since it uses less digits than its factorization.

7128720603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340443 (or 1340437 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 7128720603 is about 84431.7511544087. The cubic root of 7128720603 is about 1924.5854487544.

The spelling of 7128720603 in words is "seven billion, one hundred twenty-eight million, seven hundred twenty thousand, six hundred three".