7128223552 has 28 divisors (see below), whose sum is σ = 14411963556. Its totient is φ = 3496862720.

The previous prime is 7128223537. The next prime is 7128223589. The reversal of 7128223552 is 2553228217.

It can be written as a sum of positive squares in 2 ways, for example, as 6251116096 + 877107456 = 79064^2 + 29616^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047349 + ... + 1054132.

Almost surely, 2^7128223552 is an apocalyptic number.

It is an amenable number.

7128223552 is an abundant number, since it is smaller than the sum of its proper divisors (7283740004).

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

7128223552 is a wasteful number, since it uses less digits than its factorization.

7128223552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101546 (or 2101536 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 7128223552 is about 84428.8075955121. The cubic root of 7128223552 is about 1924.5407170553.

The spelling of 7128223552 in words is "seven billion, one hundred twenty-eight million, two hundred twenty-three thousand, five hundred fifty-two".