29997973809563 has 2 divisors, whose sum is σ = 29997973809564. Its totient is φ = 29997973809562.

The previous prime is 29997973809547. The next prime is 29997973809703. The reversal of 29997973809563 is 36590837979992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29997973809563 - 2⁴ = 29997973809547 is a prime.

It is not a weakly prime, because it can be changed into another prime (29997970809563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998986904781 + 14998986904782.

It is an arithmetic number, because the mean of its divisors is an integer number (14998986904782).

Almost surely, 2^{29997973809563} is an apocalyptic number.

29997973809563 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997973809563 is an equidigital number, since it uses as much as digits as its factorization.

29997973809563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12499492320, while the sum is 86.

The spelling of 29997973809563 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-three million, eight hundred nine thousand, five hundred sixty-three".