29988660209 has 2 divisors, whose sum is σ = 29988660210. Its totient is φ = 29988660208.

The previous prime is 29988660139. The next prime is 29988660211. The reversal of 29988660209 is 90206688992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28536669184 + 1451991025 = 168928^2 + 38105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29988660209 is a prime.

It is a super-2 number, since 2×29988660209² (a number of 22 digits) contains 22 as substring.

Together with 29988660211, 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 (29988660409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14994330104 + 14994330105.

It is an arithmetic number, because the mean of its divisors is an integer number (14994330105).

Almost surely, 2^29988660209 is an apocalyptic number.

It is an amenable number.

29988660209 is a deficient number, since it is larger than the sum of its proper divisors (1).

29988660209 is an equidigital number, since it uses as much as digits as its factorization.

29988660209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 29988660209 in words is "twenty-nine billion, nine hundred eighty-eight million, six hundred sixty thousand, two hundred nine".