117665546819 has 2 divisors, whose sum is σ = 117665546820. Its totient is φ = 117665546818.

The previous prime is 117665546771. The next prime is 117665546849. The reversal of 117665546819 is 918645566711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117665546819 - 2²⁰ = 117664498243 is a prime.

It is a super-2 number, since 2×117665546819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117665546849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58832773409 + 58832773410.

It is an arithmetic number, because the mean of its divisors is an integer number (58832773410).

Almost surely, 2^117665546819 is an apocalyptic number.

117665546819 is a deficient number, since it is larger than the sum of its proper divisors (1).

117665546819 is an equidigital number, since it uses as much as digits as its factorization.

117665546819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 59.

The spelling of 117665546819 in words is "one hundred seventeen billion, six hundred sixty-five million, five hundred forty-six thousand, eight hundred nineteen".