6665160899 has 2 divisors, whose sum is σ = 6665160900. Its totient is φ = 6665160898.

The previous prime is 6665160889. The next prime is 6665160907. The reversal of 6665160899 is 9980615666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6665160899 - 2⁴ = 6665160883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6665160889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332580449 + 3332580450.

It is an arithmetic number, because the mean of its divisors is an integer number (3332580450).

Almost surely, 2^6665160899 is an apocalyptic number.

6665160899 is a deficient number, since it is larger than the sum of its proper divisors (1).

6665160899 is an equidigital number, since it uses as much as digits as its factorization.

6665160899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The square root of 6665160899 is about 81640.4366659072. The cubic root of 6665160899 is about 1881.9303489299.

The spelling of 6665160899 in words is "six billion, six hundred sixty-five million, one hundred sixty thousand, eight hundred ninety-nine".