7128538067 has 16 divisors (see below), whose sum is σ = 8433008640. Its totient is φ = 5898197088.

The previous prime is 7128538063. The next prime is 7128538069. The reversal of 7128538067 is 7608358217.

It is a happy number.

7128538067 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7128538067 - 2² = 7128538063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7128538063) 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, 75467 + ... + 141252.

It is an arithmetic number, because the mean of its divisors is an integer number (527063040).

Almost surely, 2^7128538067 is an apocalyptic number.

7128538067 is a deficient number, since it is larger than the sum of its proper divisors (1304470573).

7128538067 is a wasteful number, since it uses less digits than its factorization.

7128538067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216890.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 7128538067 is about 84430.6701797398. The cubic root of 7128538067 is about 1924.5690218176.

The spelling of 7128538067 in words is "seven billion, one hundred twenty-eight million, five hundred thirty-eight thousand, sixty-seven".