6651864255 has 48 divisors (see below), whose sum is σ = 11116209312. Its totient is φ = 3394137600.

The previous prime is 6651864239. The next prime is 6651864257. The reversal of 6651864255 is 5524681566.

It is not a de Polignac number, because 6651864255 - 2⁴ = 6651864239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651864257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2063545 + ... + 2066765.

It is an arithmetic number, because the mean of its divisors is an integer number (231587694).

Almost surely, 2^6651864255 is an apocalyptic number.

6651864255 is a deficient number, since it is larger than the sum of its proper divisors (4464345057).

6651864255 is a wasteful number, since it uses less digits than its factorization.

6651864255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388 (or 3327 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The square root of 6651864255 is about 81558.9618313034. The cubic root of 6651864255 is about 1880.6780652606.

The spelling of 6651864255 in words is "six billion, six hundred fifty-one million, eight hundred sixty-four thousand, two hundred fifty-five".