6659466091 has 2 divisors, whose sum is σ = 6659466092. Its totient is φ = 6659466090.

The previous prime is 6659466061. The next prime is 6659466109. The reversal of 6659466091 is 1906649566.

Together with next prime (6659466109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6659466091 - 2⁷ = 6659465963 is a prime.

It is not a weakly prime, because it can be changed into another prime (6659466031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3329733045 + 3329733046.

It is an arithmetic number, because the mean of its divisors is an integer number (3329733046).

Almost surely, 2^6659466091 is an apocalyptic number.

6659466091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6659466091 is an equidigital number, since it uses as much as digits as its factorization.

6659466091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The square root of 6659466091 is about 81605.5518393203. The cubic root of 6659466091 is about 1881.3942135469.

The spelling of 6659466091 in words is "six billion, six hundred fifty-nine million, four hundred sixty-six thousand, ninety-one".