66871710379 has 2 divisors, whose sum is σ = 66871710380. Its totient is φ = 66871710378.

The previous prime is 66871710313. The next prime is 66871710463. The reversal of 66871710379 is 97301717866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66871710379 - 2³³ = 58281775787 is a prime.

It is not a weakly prime, because it can be changed into another prime (66871710179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33435855189 + 33435855190.

It is an arithmetic number, because the mean of its divisors is an integer number (33435855190).

Almost surely, 2^66871710379 is an apocalyptic number.

66871710379 is a deficient number, since it is larger than the sum of its proper divisors (1).

66871710379 is an equidigital number, since it uses as much as digits as its factorization.

66871710379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 66871710379 in words is "sixty-six billion, eight hundred seventy-one million, seven hundred ten thousand, three hundred seventy-nine".