75666346222729 has 2 divisors, whose sum is σ = 75666346222730. Its totient is φ = 75666346222728.

The previous prime is 75666346222723. The next prime is 75666346222741. The reversal of 75666346222729 is 92722264366657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37921296532729 + 37745049690000 = 6158027^2 + 6143700^2 .

It is a cyclic number.

It is not a de Polignac number, because 75666346222729 - 2¹⁷ = 75666346091657 is a prime.

It is not a weakly prime, because it can be changed into another prime (75666346222723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37833173111364 + 37833173111365.

It is an arithmetic number, because the mean of its divisors is an integer number (37833173111365).

Almost surely, 2^{75666346222729} is an apocalyptic number.

It is an amenable number.

75666346222729 is a deficient number, since it is larger than the sum of its proper divisors (1).

75666346222729 is an equidigital number, since it uses as much as digits as its factorization.

75666346222729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 548674560, while the sum is 67.

The spelling of 75666346222729 in words is "seventy-five trillion, six hundred sixty-six billion, three hundred forty-six million, two hundred twenty-two thousand, seven hundred twenty-nine".