66370329871 has 2 divisors, whose sum is σ = 66370329872. Its totient is φ = 66370329870.

The previous prime is 66370329869. The next prime is 66370329887. The reversal of 66370329871 is 17892307366.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66370329871 - 2¹ = 66370329869 is a prime.

Together with 66370329869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66370329371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33185164935 + 33185164936.

It is an arithmetic number, because the mean of its divisors is an integer number (33185164936).

Almost surely, 2^66370329871 is an apocalyptic number.

66370329871 is a deficient number, since it is larger than the sum of its proper divisors (1).

66370329871 is an equidigital number, since it uses as much as digits as its factorization.

66370329871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 66370329871 in words is "sixty-six billion, three hundred seventy million, three hundred twenty-nine thousand, eight hundred seventy-one".