6511655000 has 40 divisors (see below), whose sum is σ = 15256819380. Its totient is φ = 2604660000.

The previous prime is 6511654999. The next prime is 6511655011. The reversal of 6511655000 is 5561156.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 646166 + ... + 656165.

Almost surely, 2^6511655000 is an apocalyptic number.

It is an amenable number.

6511655000 is an abundant number, since it is smaller than the sum of its proper divisors (8745164380).

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

6511655000 is a wasteful number, since it uses less digits than its factorization.

6511655000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302357 (or 1302338 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 6511655000 is about 80694.8263521274. The cubic root of 6511655000 is about 1867.3703589815.

The spelling of 6511655000 in words is "six billion, five hundred eleven million, six hundred fifty-five thousand".