66344412047 has 2 divisors, whose sum is σ = 66344412048. Its totient is φ = 66344412046.

The previous prime is 66344411999. The next prime is 66344412073. The reversal of 66344412047 is 74021444366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66344412047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66344411995 and 66344412013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66344417047) 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, 33172206023 + 33172206024.

It is an arithmetic number, because the mean of its divisors is an integer number (33172206024).

Almost surely, 2^66344412047 is an apocalyptic number.

66344412047 is a deficient number, since it is larger than the sum of its proper divisors (1).

66344412047 is an equidigital number, since it uses as much as digits as its factorization.

66344412047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 66344412047 in words is "sixty-six billion, three hundred forty-four million, four hundred twelve thousand, forty-seven".