117708311986 has 8 divisors (see below), whose sum is σ = 177035826924. Its totient is φ = 58696369680.

The previous prime is 117708311971. The next prime is 117708311989. The reversal of 117708311986 is 689113807711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117182297761 + 526014225 = 342319^2 + 22935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×117708311986² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117708311989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78892225 + ... + 78893716.

Almost surely, 2^117708311986 is an apocalyptic number.

117708311986 is a deficient number, since it is larger than the sum of its proper divisors (59327514938).

117708311986 is a wasteful number, since it uses less digits than its factorization.

117708311986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157786316.

The product of its (nonzero) digits is 508032, while the sum is 52.

The spelling of 117708311986 in words is "one hundred seventeen billion, seven hundred eight million, three hundred eleven thousand, nine hundred eighty-six".