6366216651 has 4 divisors (see below), whose sum is σ = 8488288872. Its totient is φ = 4244144432.

The previous prime is 6366216617. The next prime is 6366216679. The reversal of 6366216651 is 1566126636.

6366216651 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6366216651 - 2⁶ = 6366216587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6366216601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061036106 + ... + 1061036111.

It is an arithmetic number, because the mean of its divisors is an integer number (2122072218).

Almost surely, 2^6366216651 is an apocalyptic number.

6366216651 is a deficient number, since it is larger than the sum of its proper divisors (2122072221).

6366216651 is a wasteful number, since it uses less digits than its factorization.

6366216651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122072220.

The product of its digits is 233280, while the sum is 42.

The square root of 6366216651 is about 79788.5746896133. The cubic root of 6366216651 is about 1853.3629263695.

The spelling of 6366216651 in words is "six billion, three hundred sixty-six million, two hundred sixteen thousand, six hundred fifty-one".