668009954659 has 2 divisors, whose sum is σ = 668009954660. Its totient is φ = 668009954658.

The previous prime is 668009954629. The next prime is 668009954701. The reversal of 668009954659 is 956459900866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668009954659 - 2⁷ = 668009954531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 668009954594 and 668009954603.

It is not a weakly prime, because it can be changed into another prime (668009954629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334004977329 + 334004977330.

It is an arithmetic number, because the mean of its divisors is an integer number (334004977330).

Almost surely, 2^668009954659 is an apocalyptic number.

668009954659 is a deficient number, since it is larger than the sum of its proper divisors (1).

668009954659 is an equidigital number, since it uses as much as digits as its factorization.

668009954659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125971200, while the sum is 67.

The spelling of 668009954659 in words is "six hundred sixty-eight billion, nine million, nine hundred fifty-four thousand, six hundred fifty-nine".