7131600128 has 36 divisors (see below), whose sum is σ = 14309199828. Its totient is φ = 3547299840.

The previous prime is 7131600121. The next prime is 7131600137. The reversal of 7131600128 is 8210061317.

It can be written as a sum of positive squares in 2 ways, for example, as 1754604544 + 5376995584 = 41888^2 + 73328^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7131600128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131600121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22763 + ... + 121578.

It is an arithmetic number, because the mean of its divisors is an integer number (397477773).

Almost surely, 2^7131600128 is an apocalyptic number.

It is an amenable number.

7131600128 is an abundant number, since it is smaller than the sum of its proper divisors (7177599700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7131600128 is a wasteful number, since it uses less digits than its factorization.

7131600128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144550 (or 144536 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 7131600128 is about 84448.8018150643. The cubic root of 7131600128 is about 1924.8445483510.

The spelling of 7131600128 in words is "seven billion, one hundred thirty-one million, six hundred thousand, one hundred twenty-eight".