29243710216991 has 2 divisors, whose sum is σ = 29243710216992. Its totient is φ = 29243710216990.

The previous prime is 29243710216921. The next prime is 29243710217027. The reversal of 29243710216991 is 19961201734292.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29243710216991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29243710216921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14621855108495 + 14621855108496.

It is an arithmetic number, because the mean of its divisors is an integer number (14621855108496).

Almost surely, 2^{29243710216991} is an apocalyptic number.

29243710216991 is a deficient number, since it is larger than the sum of its proper divisors (1).

29243710216991 is an equidigital number, since it uses as much as digits as its factorization.

29243710216991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 29243710216991 in words is "twenty-nine trillion, two hundred forty-three billion, seven hundred ten million, two hundred sixteen thousand, nine hundred ninety-one".