6512557628 has 12 divisors (see below), whose sum is σ = 11417441112. Its totient is φ = 3250431600.

The previous prime is 6512557613. The next prime is 6512557631. The reversal of 6512557628 is 8267552156.

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, 1459298 + ... + 1463753.

It is an arithmetic number, because the mean of its divisors is an integer number (951453426).

Almost surely, 2^6512557628 is an apocalyptic number.

It is an amenable number.

6512557628 is a deficient number, since it is larger than the sum of its proper divisors (4904883484).

6512557628 is a wasteful number, since it uses less digits than its factorization.

6512557628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923612 (or 2923610 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 47.

The square root of 6512557628 is about 80700.4190075863. The cubic root of 6512557628 is about 1867.4566382708.

The spelling of 6512557628 in words is "six billion, five hundred twelve million, five hundred fifty-seven thousand, six hundred twenty-eight".