66344265435079 has 2 divisors, whose sum is σ = 66344265435080. Its totient is φ = 66344265435078.

The previous prime is 66344265434999. The next prime is 66344265435113. The reversal of 66344265435079 is 97053456244366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66344265435079 is a prime.

It is a super-2 number, since 2×66344265435079² (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 66344265435079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66344265435179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33172132717539 + 33172132717540.

It is an arithmetic number, because the mean of its divisors is an integer number (33172132717540).

Almost surely, 2^{66344265435079} is an apocalyptic number.

66344265435079 is a deficient number, since it is larger than the sum of its proper divisors (1).

66344265435079 is an equidigital number, since it uses as much as digits as its factorization.

66344265435079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 391910400, while the sum is 64.

The spelling of 66344265435079 in words is "sixty-six trillion, three hundred forty-four billion, two hundred sixty-five million, four hundred thirty-five thousand, seventy-nine".