117568022261 has 2 divisors, whose sum is σ = 117568022262. Its totient is φ = 117568022260.

The previous prime is 117568022239. The next prime is 117568022291. The reversal of 117568022261 is 162220865711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106125441361 + 11442580900 = 325769^2 + 106970^2 .

It is an emirp because it is prime and its reverse (162220865711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117568022261 - 2¹⁰ = 117568021237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117568022291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58784011130 + 58784011131.

It is an arithmetic number, because the mean of its divisors is an integer number (58784011131).

Almost surely, 2^117568022261 is an apocalyptic number.

It is an amenable number.

117568022261 is a deficient number, since it is larger than the sum of its proper divisors (1).

117568022261 is an equidigital number, since it uses as much as digits as its factorization.

117568022261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

Adding to 117568022261 its reverse (162220865711), we get a palindrome (279788887972).

The spelling of 117568022261 in words is "one hundred seventeen billion, five hundred sixty-eight million, twenty-two thousand, two hundred sixty-one".