66574751029 has 2 divisors, whose sum is σ = 66574751030. Its totient is φ = 66574751028.

The previous prime is 66574751011. The next prime is 66574751053. The reversal of 66574751029 is 92015747566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43961508900 + 22613242129 = 209670^2 + 150377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66574751029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66574751099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33287375514 + 33287375515.

It is an arithmetic number, because the mean of its divisors is an integer number (33287375515).

Almost surely, 2^66574751029 is an apocalyptic number.

It is an amenable number.

66574751029 is a deficient number, since it is larger than the sum of its proper divisors (1).

66574751029 is an equidigital number, since it uses as much as digits as its factorization.

66574751029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 66574751029 in words is "sixty-six billion, five hundred seventy-four million, seven hundred fifty-one thousand, twenty-nine".