117353519761 has 3 divisors (see below), whose sum is σ = 117353862331. Its totient is φ = 117353177192.

The previous prime is 117353519747. The next prime is 117353519771. The reversal of 117353519761 is 167915353711.

The square root of 117353519761 is 342569.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 84895894161 + 32457625600 = 291369^2 + 180160^2 .

It is not a de Polignac number, because 117353519761 - 2¹¹ = 117353517713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117353519771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 171285 + ... + 513853.

Almost surely, 2^117353519761 is an apocalyptic number.

117353519761 is the 342569-th square number.

117353519761 is the 171285-th centered octagonal number.

It is an amenable number.

117353519761 is a deficient number, since it is larger than the sum of its proper divisors (342570).

117353519761 is an frugal number, since it uses more digits than its factorization.

117353519761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685138 (or 342569 counting only the distinct ones).

The product of its digits is 595350, while the sum is 49.

Multiplying 117353519761 by its sum of digits (49), we get a square (5750322468289 = 2397983²).

The spelling of 117353519761 in words is "one hundred seventeen billion, three hundred fifty-three million, five hundred nineteen thousand, seven hundred sixty-one".