29217190109 has 2 divisors, whose sum is σ = 29217190110. Its totient is φ = 29217190108.

The previous prime is 29217190081. The next prime is 29217190117. The reversal of 29217190109 is 90109171292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15061425625 + 14155764484 = 122725^2 + 118978^2 .

It is a cyclic number.

It is not a de Polignac number, because 29217190109 - 2²⁰ = 29216141533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29217190129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14608595054 + 14608595055.

It is an arithmetic number, because the mean of its divisors is an integer number (14608595055).

Almost surely, 2^29217190109 is an apocalyptic number.

It is an amenable number.

29217190109 is a deficient number, since it is larger than the sum of its proper divisors (1).

29217190109 is an equidigital number, since it uses as much as digits as its factorization.

29217190109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 29217190109 in words is "twenty-nine billion, two hundred seventeen million, one hundred ninety thousand, one hundred nine".