66734301877 has 2 divisors, whose sum is σ = 66734301878. Its totient is φ = 66734301876.

The previous prime is 66734301853. The next prime is 66734301899. The reversal of 66734301877 is 77810343766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44218098961 + 22516202916 = 210281^2 + 150054^2 .

It is a cyclic number.

It is not a de Polignac number, because 66734301877 - 2¹¹ = 66734299829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66734301817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33367150938 + 33367150939.

It is an arithmetic number, because the mean of its divisors is an integer number (33367150939).

Almost surely, 2^66734301877 is an apocalyptic number.

It is an amenable number.

66734301877 is a deficient number, since it is larger than the sum of its proper divisors (1).

66734301877 is an equidigital number, since it uses as much as digits as its factorization.

66734301877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The spelling of 66734301877 in words is "sixty-six billion, seven hundred thirty-four million, three hundred one thousand, eight hundred seventy-seven".