117768109 has 2 divisors, whose sum is σ = 117768110. Its totient is φ = 117768108.

The previous prime is 117768103. The next prime is 117768143. The reversal of 117768109 is 901867711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89359209 + 28408900 = 9453^2 + 5330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117768109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117768103) 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, 58884054 + 58884055.

It is an arithmetic number, because the mean of its divisors is an integer number (58884055).

Almost surely, 2^117768109 is an apocalyptic number.

It is an amenable number.

117768109 is a deficient number, since it is larger than the sum of its proper divisors (1).

117768109 is an equidigital number, since it uses as much as digits as its factorization.

117768109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 40.

The square root of 117768109 is about 10852.1015937006. The cubic root of 117768109 is about 490.1653044938.

The spelling of 117768109 in words is "one hundred seventeen million, seven hundred sixty-eight thousand, one hundred nine".