7128038173 has 4 divisors (see below), whose sum is σ = 7139666908. Its totient is φ = 7116409440.

The previous prime is 7128038131. The next prime is 7128038191. The reversal of 7128038173 is 3718308217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3222038169 + 3906000004 = 56763^2 + 62498^2 .

It is a cyclic number.

It is not a de Polignac number, because 7128038173 - 2²¹ = 7125941021 is a prime.

It is a super-3 number, since 3×7128038173³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7128038473) 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 3 ways as a sum of consecutive naturals, for example, 5813448 + ... + 5814673.

It is an arithmetic number, because the mean of its divisors is an integer number (1784916727).

Almost surely, 2^7128038173 is an apocalyptic number.

It is an amenable number.

7128038173 is a deficient number, since it is larger than the sum of its proper divisors (11628735).

7128038173 is a wasteful number, since it uses less digits than its factorization.

7128038173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11628734.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 7128038173 is about 84427.7097462675. The cubic root of 7128038173 is about 1924.5240334910.

The spelling of 7128038173 in words is "seven billion, one hundred twenty-eight million, thirty-eight thousand, one hundred seventy-three".