29997973809547 has 2 divisors, whose sum is σ = 29997973809548. Its totient is φ = 29997973809546.

The previous prime is 29997973809451. The next prime is 29997973809563. The reversal of 29997973809547 is 74590837979992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29997973809547 - 2¹¹ = 29997973807499 is a prime.

It is not a weakly prime, because it can be changed into another prime (29997973809047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998986904773 + 14998986904774.

It is an arithmetic number, because the mean of its divisors is an integer number (14998986904774).

Almost surely, 2^{29997973809547} is an apocalyptic number.

29997973809547 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997973809547 is an equidigital number, since it uses as much as digits as its factorization.

29997973809547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19443654720, while the sum is 88.

The spelling of 29997973809547 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-three million, eight hundred nine thousand, five hundred forty-seven".