66502770304979 has 2 divisors, whose sum is σ = 66502770304980. Its totient is φ = 66502770304978.

The previous prime is 66502770304939. The next prime is 66502770304981. The reversal of 66502770304979 is 97940307720566.

66502770304979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66502770304979 is a prime.

Together with 66502770304981, 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 (66502770304939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33251385152489 + 33251385152490.

It is an arithmetic number, because the mean of its divisors is an integer number (33251385152490).

Almost surely, 2^{66502770304979} is an apocalyptic number.

66502770304979 is a deficient number, since it is larger than the sum of its proper divisors (1).

66502770304979 is an equidigital number, since it uses as much as digits as its factorization.

66502770304979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120022560, while the sum is 65.

The spelling of 66502770304979 in words is "sixty-six trillion, five hundred two billion, seven hundred seventy million, three hundred four thousand, nine hundred seventy-nine".