66729338941 has 2 divisors, whose sum is σ = 66729338942. Its totient is φ = 66729338940.

The previous prime is 66729338857. The next prime is 66729338953. The reversal of 66729338941 is 14983392766.

It is a happy number.

66729338941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37152562500 + 29576776441 = 192750^2 + 171979^2 .

It is a cyclic number.

It is not a de Polignac number, because 66729338941 - 2⁷ = 66729338813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66729338971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33364669470 + 33364669471.

It is an arithmetic number, because the mean of its divisors is an integer number (33364669471).

Almost surely, 2^66729338941 is an apocalyptic number.

It is an amenable number.

66729338941 is a deficient number, since it is larger than the sum of its proper divisors (1).

66729338941 is an equidigital number, since it uses as much as digits as its factorization.

66729338941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 58.

The spelling of 66729338941 in words is "sixty-six billion, seven hundred twenty-nine million, three hundred thirty-eight thousand, nine hundred forty-one".