66424752929 has 2 divisors, whose sum is σ = 66424752930. Its totient is φ = 66424752928.

The previous prime is 66424752893. The next prime is 66424752931. The reversal of 66424752929 is 92925742466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62512500625 + 3912252304 = 250025^2 + 62548^2 .

It is a cyclic number.

It is not a de Polignac number, because 66424752929 - 2¹² = 66424748833 is a prime.

Together with 66424752931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66424752959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33212376464 + 33212376465.

It is an arithmetic number, because the mean of its divisors is an integer number (33212376465).

Almost surely, 2^66424752929 is an apocalyptic number.

It is an amenable number.

66424752929 is a deficient number, since it is larger than the sum of its proper divisors (1).

66424752929 is an equidigital number, since it uses as much as digits as its factorization.

66424752929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 56.

The spelling of 66424752929 in words is "sixty-six billion, four hundred twenty-four million, seven hundred fifty-two thousand, nine hundred twenty-nine".