29217190117 has 2 divisors, whose sum is σ = 29217190118. Its totient is φ = 29217190116.

The previous prime is 29217190109. The next prime is 29217190129. The reversal of 29217190117 is 71109171292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21596947681 + 7620242436 = 146959^2 + 87294^2 .

It is a cyclic number.

It is not a de Polignac number, because 29217190117 - 2³ = 29217190109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29217190117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29217190187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14608595058 + 14608595059.

It is an arithmetic number, because the mean of its divisors is an integer number (14608595059).

Almost surely, 2^29217190117 is an apocalyptic number.

It is an amenable number.

29217190117 is a deficient number, since it is larger than the sum of its proper divisors (1).

29217190117 is an equidigital number, since it uses as much as digits as its factorization.

29217190117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 40.

The spelling of 29217190117 in words is "twenty-nine billion, two hundred seventeen million, one hundred ninety thousand, one hundred seventeen".