117717771835 has 4 divisors (see below), whose sum is σ = 141261326208. Its totient is φ = 94174217464.

The previous prime is 117717771827. The next prime is 117717771851. The reversal of 117717771835 is 538177717711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 538177717711 = 43 ⋅12515760877.

It is a cyclic number.

It is not a de Polignac number, because 117717771835 - 2³ = 117717771827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11771777179 + ... + 11771777188.

It is an arithmetic number, because the mean of its divisors is an integer number (35315331552).

Almost surely, 2^117717771835 is an apocalyptic number.

117717771835 is a deficient number, since it is larger than the sum of its proper divisors (23543554373).

117717771835 is an equidigital number, since it uses as much as digits as its factorization.

117717771835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23543554372.

The product of its digits is 2016840, while the sum is 55.

The spelling of 117717771835 in words is "one hundred seventeen billion, seven hundred seventeen million, seven hundred seventy-one thousand, eight hundred thirty-five".