66100506611 has 2 divisors, whose sum is σ = 66100506612. Its totient is φ = 66100506610.

The previous prime is 66100506583. The next prime is 66100506613. The reversal of 66100506611 is 11660500166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66100506611 - 2¹⁸ = 66100244467 is a prime.

Together with 66100506613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66100506613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33050253305 + 33050253306.

It is an arithmetic number, because the mean of its divisors is an integer number (33050253306).

Almost surely, 2^66100506611 is an apocalyptic number.

66100506611 is a deficient number, since it is larger than the sum of its proper divisors (1).

66100506611 is an equidigital number, since it uses as much as digits as its factorization.

66100506611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 66100506611 in words is "sixty-six billion, one hundred million, five hundred six thousand, six hundred eleven".