66757040101 has 2 divisors, whose sum is σ = 66757040102. Its totient is φ = 66757040100.

The previous prime is 66757040041. The next prime is 66757040149. The reversal of 66757040101 is 10104075766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61417230625 + 5339809476 = 247825^2 + 73074^2 .

It is a cyclic number.

It is not a de Polignac number, because 66757040101 - 2⁹ = 66757039589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66757080101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33378520050 + 33378520051.

It is an arithmetic number, because the mean of its divisors is an integer number (33378520051).

Almost surely, 2^66757040101 is an apocalyptic number.

It is an amenable number.

66757040101 is a deficient number, since it is larger than the sum of its proper divisors (1).

66757040101 is an equidigital number, since it uses as much as digits as its factorization.

66757040101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 66757040101 in words is "sixty-six billion, seven hundred fifty-seven million, forty thousand, one hundred one".