66132606836749 has 2 divisors, whose sum is σ = 66132606836750. Its totient is φ = 66132606836748.

The previous prime is 66132606836741. The next prime is 66132606836939. The reversal of 66132606836749 is 94763860623166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66132384081124 + 222755625 = 8132182^2 + 14925^2 .

It is a cyclic number.

It is not a de Polignac number, because 66132606836749 - 2³ = 66132606836741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66132606836741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33066303418374 + 33066303418375.

It is an arithmetic number, because the mean of its divisors is an integer number (33066303418375).

Almost surely, 2^{66132606836749} is an apocalyptic number.

It is an amenable number.

66132606836749 is a deficient number, since it is larger than the sum of its proper divisors (1).

66132606836749 is an equidigital number, since it uses as much as digits as its factorization.

66132606836749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282175488, while the sum is 67.

The spelling of 66132606836749 in words is "sixty-six trillion, one hundred thirty-two billion, six hundred six million, eight hundred thirty-six thousand, seven hundred forty-nine".