29294620217 has 2 divisors, whose sum is σ = 29294620218. Its totient is φ = 29294620216.

The previous prime is 29294620189. The next prime is 29294620237. The reversal of 29294620217 is 71202649292.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26316626176 + 2977994041 = 162224^2 + 54571^2 .

It is a cyclic number.

It is not a de Polignac number, because 29294620217 - 2³⁰ = 28220878393 is a prime.

It is not a weakly prime, because it can be changed into another prime (29294620237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14647310108 + 14647310109.

It is an arithmetic number, because the mean of its divisors is an integer number (14647310109).

Almost surely, 2^29294620217 is an apocalyptic number.

It is an amenable number.

29294620217 is a deficient number, since it is larger than the sum of its proper divisors (1).

29294620217 is an equidigital number, since it uses as much as digits as its factorization.

29294620217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 29294620217 in words is "twenty-nine billion, two hundred ninety-four million, six hundred twenty thousand, two hundred seventeen".