66206151629 has 2 divisors, whose sum is σ = 66206151630. Its totient is φ = 66206151628.

The previous prime is 66206151593. The next prime is 66206151637. The reversal of 66206151629 is 92615160266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52187118025 + 14019033604 = 228445^2 + 118402^2 .

It is a cyclic number.

It is not a de Polignac number, because 66206151629 - 2²⁰ = 66205103053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66206151629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66206151829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33103075814 + 33103075815.

It is an arithmetic number, because the mean of its divisors is an integer number (33103075815).

Almost surely, 2^66206151629 is an apocalyptic number.

It is an amenable number.

66206151629 is a deficient number, since it is larger than the sum of its proper divisors (1).

66206151629 is an equidigital number, since it uses as much as digits as its factorization.

66206151629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 66206151629 in words is "sixty-six billion, two hundred six million, one hundred fifty-one thousand, six hundred twenty-nine".