6405765528 has 16 divisors (see below), whose sum is σ = 16014413880. Its totient is φ = 2135255168.

The previous prime is 6405765511. The next prime is 6405765539. The reversal of 6405765528 is 8255675046.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133453425 + ... + 133453472.

Almost surely, 2^6405765528 is an apocalyptic number.

It is an amenable number.

6405765528 is an abundant number, since it is smaller than the sum of its proper divisors (9608648352).

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

6405765528 is a wasteful number, since it uses less digits than its factorization.

6405765528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266906906 (or 266906902 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The square root of 6405765528 is about 80036.0264380985. The cubic root of 6405765528 is about 1857.1928913271.

The spelling of 6405765528 in words is "six billion, four hundred five million, seven hundred sixty-five thousand, five hundred twenty-eight".