117665546771 has 2 divisors, whose sum is σ = 117665546772. Its totient is φ = 117665546770.

The previous prime is 117665546743. The next prime is 117665546819. The reversal of 117665546771 is 177645566711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117665546771 is a prime.

It is not a weakly prime, because it can be changed into another prime (117665546701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58832773385 + 58832773386.

It is an arithmetic number, because the mean of its divisors is an integer number (58832773386).

Almost surely, 2^117665546771 is an apocalyptic number.

117665546771 is a deficient number, since it is larger than the sum of its proper divisors (1).

117665546771 is an equidigital number, since it uses as much as digits as its factorization.

117665546771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7408800, while the sum is 56.

The spelling of 117665546771 in words is "one hundred seventeen billion, six hundred sixty-five million, five hundred forty-six thousand, seven hundred seventy-one".