6653864253 has 16 divisors (see below), whose sum is σ = 9177170240. Its totient is φ = 4284959616.

The previous prime is 6653864249. The next prime is 6653864291. The reversal of 6653864253 is 3524683566.

It is not a de Polignac number, because 6653864253 - 2² = 6653864249 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653864233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200200 + ... + 231057.

It is an arithmetic number, because the mean of its divisors is an integer number (573573140).

Almost surely, 2^6653864253 is an apocalyptic number.

It is an amenable number.

6653864253 is a deficient number, since it is larger than the sum of its proper divisors (2523305987).

6653864253 is a wasteful number, since it uses less digits than its factorization.

6653864253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431436.

The product of its digits is 3110400, while the sum is 48.

The square root of 6653864253 is about 81571.2219658379. The cubic root of 6653864253 is about 1880.8665324991.

The spelling of 6653864253 in words is "six billion, six hundred fifty-three million, eight hundred sixty-four thousand, two hundred fifty-three".