6651996253 has 4 divisors (see below), whose sum is σ = 7602281440. Its totient is φ = 5701711068.

The previous prime is 6651996217. The next prime is 6651996277. The reversal of 6651996253 is 3526991566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651996253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6651996253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651996203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475142583 + ... + 475142596.

It is an arithmetic number, because the mean of its divisors is an integer number (1900570360).

Almost surely, 2^6651996253 is an apocalyptic number.

It is an amenable number.

6651996253 is a deficient number, since it is larger than the sum of its proper divisors (950285187).

6651996253 is an equidigital number, since it uses as much as digits as its factorization.

6651996253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950285186.

The product of its digits is 2624400, while the sum is 52.

The square root of 6651996253 is about 81559.7710455345. The cubic root of 6651996253 is about 1880.6905050866.

The spelling of 6651996253 in words is "six billion, six hundred fifty-one million, nine hundred ninety-six thousand, two hundred fifty-three".