66162044334439 has 2 divisors, whose sum is σ = 66162044334440. Its totient is φ = 66162044334438.

The previous prime is 66162044334431. The next prime is 66162044334457. The reversal of 66162044334439 is 93443344026166.

66162044334439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66162044334439 - 2³ = 66162044334431 is a prime.

It is a super-2 number, since 2×66162044334439² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66162044334439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66162044334431) 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, 33081022167219 + 33081022167220.

It is an arithmetic number, because the mean of its divisors is an integer number (33081022167220).

Almost surely, 2^{66162044334439} is an apocalyptic number.

66162044334439 is a deficient number, since it is larger than the sum of its proper divisors (1).

66162044334439 is an equidigital number, since it uses as much as digits as its factorization.

66162044334439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 55.

The spelling of 66162044334439 in words is "sixty-six trillion, one hundred sixty-two billion, forty-four million, three hundred thirty-four thousand, four hundred thirty-nine".