67066145819 has 2 divisors, whose sum is σ = 67066145820. Its totient is φ = 67066145818.

The previous prime is 67066145803. The next prime is 67066145821. The reversal of 67066145819 is 91854166076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67066145819 - 2⁴ = 67066145803 is a prime.

It is a super-2 number, since 2×67066145819² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 67066145821, 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 (67066145879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33533072909 + 33533072910.

It is an arithmetic number, because the mean of its divisors is an integer number (33533072910).

Almost surely, 2^67066145819 is an apocalyptic number.

67066145819 is a deficient number, since it is larger than the sum of its proper divisors (1).

67066145819 is an equidigital number, since it uses as much as digits as its factorization.

67066145819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 67066145819 in words is "sixty-seven billion, sixty-six million, one hundred forty-five thousand, eight hundred nineteen".