66734124797077 has 2 divisors, whose sum is σ = 66734124797078. Its totient is φ = 66734124797076.

The previous prime is 66734124797059. The next prime is 66734124797143. The reversal of 66734124797077 is 77079742143766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44047631911921 + 22686492885156 = 6636839^2 + 4763034^2 .

It is a cyclic number.

It is not a de Polignac number, because 66734124797077 - 2¹¹ = 66734124795029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66734124796997 and 66734124797015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66734124797017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33367062398538 + 33367062398539.

It is an arithmetic number, because the mean of its divisors is an integer number (33367062398539).

Almost surely, 2^{66734124797077} is an apocalyptic number.

It is an amenable number.

66734124797077 is a deficient number, since it is larger than the sum of its proper divisors (1).

66734124797077 is an equidigital number, since it uses as much as digits as its factorization.

66734124797077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 522764928, while the sum is 70.

The spelling of 66734124797077 in words is "sixty-six trillion, seven hundred thirty-four billion, one hundred twenty-four million, seven hundred ninety-seven thousand, seventy-seven".