29009107661 has 2 divisors, whose sum is σ = 29009107662. Its totient is φ = 29009107660.

The previous prime is 29009107597. The next prime is 29009107663. The reversal of 29009107661 is 16670190092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14778049225 + 14231058436 = 121565^2 + 119294^2 .

It is a cyclic number.

It is not a de Polignac number, because 29009107661 - 2⁶ = 29009107597 is a prime.

It is a super-3 number, since 3×29009107661³ (a number of 32 digits) contains 333 as substring.

Together with 29009107663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29009107663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14504553830 + 14504553831.

It is an arithmetic number, because the mean of its divisors is an integer number (14504553831).

Almost surely, 2^29009107661 is an apocalyptic number.

It is an amenable number.

29009107661 is a deficient number, since it is larger than the sum of its proper divisors (1).

29009107661 is an equidigital number, since it uses as much as digits as its factorization.

29009107661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 29009107661 in words is "twenty-nine billion, nine million, one hundred seven thousand, six hundred sixty-one".