66105115059979 has 2 divisors, whose sum is σ = 66105115059980. Its totient is φ = 66105115059978.

The previous prime is 66105115059967. The next prime is 66105115060001. The reversal of 66105115059979 is 97995051150166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66105115059979 - 2¹¹ = 66105115057931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66105115059979.

It is not a weakly prime, because it can be changed into another prime (66105115059079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33052557529989 + 33052557529990.

It is an arithmetic number, because the mean of its divisors is an integer number (33052557529990).

Almost surely, 2^{66105115059979} is an apocalyptic number.

66105115059979 is a deficient number, since it is larger than the sum of its proper divisors (1).

66105115059979 is an equidigital number, since it uses as much as digits as its factorization.

66105115059979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22963500, while the sum is 64.

The spelling of 66105115059979 in words is "sixty-six trillion, one hundred five billion, one hundred fifteen million, fifty-nine thousand, nine hundred seventy-nine".