6615016663 has 2 divisors, whose sum is σ = 6615016664. Its totient is φ = 6615016662.

The previous prime is 6615016651. The next prime is 6615016669. The reversal of 6615016663 is 3666105166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6615016663 - 2⁵ = 6615016631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6615016669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307508331 + 3307508332.

It is an arithmetic number, because the mean of its divisors is an integer number (3307508332).

Almost surely, 2^6615016663 is an apocalyptic number.

6615016663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6615016663 is an equidigital number, since it uses as much as digits as its factorization.

6615016663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 6615016663 is about 81332.7527076270. The cubic root of 6615016663 is about 1877.1989999041.

The spelling of 6615016663 in words is "six billion, six hundred fifteen million, sixteen thousand, six hundred sixty-three".