29017780117 has 2 divisors, whose sum is σ = 29017780118. Its totient is φ = 29017780116.

The previous prime is 29017780111. The next prime is 29017780177. The reversal of 29017780117 is 71108771092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21430324881 + 7587455236 = 146391^2 + 87106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29017780117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29017780111) 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, 14508890058 + 14508890059.

It is an arithmetic number, because the mean of its divisors is an integer number (14508890059).

Almost surely, 2^29017780117 is an apocalyptic number.

It is an amenable number.

29017780117 is a deficient number, since it is larger than the sum of its proper divisors (1).

29017780117 is an equidigital number, since it uses as much as digits as its factorization.

29017780117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 43.

The spelling of 29017780117 in words is "twenty-nine billion, seventeen million, seven hundred eighty thousand, one hundred seventeen".