66300116777 has 2 divisors, whose sum is σ = 66300116778. Its totient is φ = 66300116776.

The previous prime is 66300116759. The next prime is 66300116791. The reversal of 66300116777 is 77761100366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65571332761 + 728784016 = 256069^2 + 26996^2 .

It is a cyclic number.

It is not a de Polignac number, because 66300116777 - 2⁸ = 66300116521 is a prime.

It is not a weakly prime, because it can be changed into another prime (66300116717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33150058388 + 33150058389.

It is an arithmetic number, because the mean of its divisors is an integer number (33150058389).

Almost surely, 2^66300116777 is an apocalyptic number.

It is an amenable number.

66300116777 is a deficient number, since it is larger than the sum of its proper divisors (1).

66300116777 is an equidigital number, since it uses as much as digits as its factorization.

66300116777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 44.

The spelling of 66300116777 in words is "sixty-six billion, three hundred million, one hundred sixteen thousand, seven hundred seventy-seven".