6128433581 has 4 divisors (see below), whose sum is σ = 6488929692. Its totient is φ = 5767937472.

The previous prime is 6128433551. The next prime is 6128433583. The reversal of 6128433581 is 1853348216.

6128433581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2513417956 + 3615015625 = 50134^2 + 60125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6128433581 is a prime.

It is a super-2 number, since 2×6128433581² = 75115396313456967122, which contains 22 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 (6128433583) 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, 180248030 + ... + 180248063.

It is an arithmetic number, because the mean of its divisors is an integer number (1622232423).

Almost surely, 2^6128433581 is an apocalyptic number.

It is an amenable number.

6128433581 is a deficient number, since it is larger than the sum of its proper divisors (360496111).

6128433581 is a wasteful number, since it uses less digits than its factorization.

6128433581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360496110.

The product of its digits is 138240, while the sum is 41.

The square root of 6128433581 is about 78284.3124834088. The cubic root of 6128433581 is about 1829.9946829153.

The spelling of 6128433581 in words is "six billion, one hundred twenty-eight million, four hundred thirty-three thousand, five hundred eighty-one".