29896891517897 has 2 divisors, whose sum is σ = 29896891517898. Its totient is φ = 29896891517896.

The previous prime is 29896891517863. The next prime is 29896891517953. The reversal of 29896891517897 is 79871519869892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18206981777296 + 11689909740601 = 4266964^2 + 3419051^2 .

It is a cyclic number.

It is not a de Polignac number, because 29896891517897 - 2⁸ = 29896891517641 is a prime.

It is not a weakly prime, because it can be changed into another prime (29896891517827) 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, 14948445758948 + 14948445758949.

It is an arithmetic number, because the mean of its divisors is an integer number (14948445758949).

Almost surely, 2^{29896891517897} is an apocalyptic number.

It is an amenable number.

29896891517897 is a deficient number, since it is larger than the sum of its proper divisors (1).

29896891517897 is an equidigital number, since it uses as much as digits as its factorization.

29896891517897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9876142080, while the sum is 89.

The spelling of 29896891517897 in words is "twenty-nine trillion, eight hundred ninety-six billion, eight hundred ninety-one million, five hundred seventeen thousand, eight hundred ninety-seven".