666101016611 has 2 divisors, whose sum is σ = 666101016612. Its totient is φ = 666101016610.

The previous prime is 666101016593. The next prime is 666101016629. The reversal of 666101016611 is 116610101666.

666101016611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (666101016593) and next prime (666101016629). It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 119910101999 and 999101019911.

It is a cyclic number.

It is not a de Polignac number, because 666101016611 - 2³⁰ = 665027274787 is a prime.

It is not a weakly prime, because it can be changed into another prime (666101016811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333050508305 + 333050508306.

It is an arithmetic number, because the mean of its divisors is an integer number (333050508306).

Almost surely, 2^666101016611 is an apocalyptic number.

666101016611 is a deficient number, since it is larger than the sum of its proper divisors (1).

666101016611 is an equidigital number, since it uses as much as digits as its factorization.

666101016611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 666101016611 in words is "six hundred sixty-six billion, one hundred one million, sixteen thousand, six hundred eleven".