117905473909 has 2 divisors, whose sum is σ = 117905473910. Its totient is φ = 117905473908.

The previous prime is 117905473879. The next prime is 117905473927. The reversal of 117905473909 is 909374509711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105683508100 + 12221965809 = 325090^2 + 110553^2 .

It is an emirp because it is prime and its reverse (909374509711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117905473909 - 2⁵ = 117905473877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117905473909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117905473949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58952736954 + 58952736955.

It is an arithmetic number, because the mean of its divisors is an integer number (58952736955).

Almost surely, 2^117905473909 is an apocalyptic number.

It is an amenable number.

117905473909 is a deficient number, since it is larger than the sum of its proper divisors (1).

117905473909 is an equidigital number, since it uses as much as digits as its factorization.

117905473909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2143260, while the sum is 55.

The spelling of 117905473909 in words is "one hundred seventeen billion, nine hundred five million, four hundred seventy-three thousand, nine hundred nine".