6516648756 has 36 divisors (see below), whose sum is σ = 17004018304. Its totient is φ = 2102144400.

The previous prime is 6516648739. The next prime is 6516648763. The reversal of 6516648756 is 6578466156.

6516648756 is a `hidden beast` number, since 6 + 51 + 66 + 487 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6516648756² = 84933422018152695072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2918530 + ... + 2920761.

Almost surely, 2^6516648756 is an apocalyptic number.

It is an amenable number.

6516648756 is an abundant number, since it is smaller than the sum of its proper divisors (10487369548).

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

6516648756 is a wasteful number, since it uses less digits than its factorization.

6516648756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5839332 (or 5839327 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 6516648756 is about 80725.7626535668. The cubic root of 6516648756 is about 1867.8475960349.

The spelling of 6516648756 in words is "six billion, five hundred sixteen million, six hundred forty-eight thousand, seven hundred fifty-six".