117805018697 has 2 divisors, whose sum is σ = 117805018698. Its totient is φ = 117805018696.

The previous prime is 117805018663. The next prime is 117805018739. The reversal of 117805018697 is 796810508711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116348527801 + 1456490896 = 341099^2 + 38164^2 .

It is a cyclic number.

It is not a de Polignac number, because 117805018697 - 2⁶ = 117805018633 is a prime.

It is not a weakly prime, because it can be changed into another prime (117805018607) 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 as a sum of consecutive naturals, namely, 58902509348 + 58902509349.

It is an arithmetic number, because the mean of its divisors is an integer number (58902509349).

Almost surely, 2^117805018697 is an apocalyptic number.

It is an amenable number.

117805018697 is a deficient number, since it is larger than the sum of its proper divisors (1).

117805018697 is an equidigital number, since it uses as much as digits as its factorization.

117805018697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 53.

The spelling of 117805018697 in words is "one hundred seventeen billion, eight hundred five million, eighteen thousand, six hundred ninety-seven".