66494786011 has 2 divisors, whose sum is σ = 66494786012. Its totient is φ = 66494786010.

The previous prime is 66494785961. The next prime is 66494786021. The reversal of 66494786011 is 11068749466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66494786011 - 2³³ = 57904851419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66494786011.

It is not a weakly prime, because it can be changed into another prime (66494786021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33247393005 + 33247393006.

It is an arithmetic number, because the mean of its divisors is an integer number (33247393006).

Almost surely, 2^66494786011 is an apocalyptic number.

66494786011 is a deficient number, since it is larger than the sum of its proper divisors (1).

66494786011 is an equidigital number, since it uses as much as digits as its factorization.

66494786011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 66494786011 in words is "sixty-six billion, four hundred ninety-four million, seven hundred eighty-six thousand, eleven".