117189961097761 has 2 divisors, whose sum is σ = 117189961097762. Its totient is φ = 117189961097760.

The previous prime is 117189961097689. The next prime is 117189961097777. The reversal of 117189961097761 is 167790169981711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115724215035361 + 1465746062400 = 10757519^2 + 1210680^2 .

It is a cyclic number.

It is not a de Polignac number, because 117189961097761 - 2²⁵ = 117189927543329 is a prime.

It is not a weakly prime, because it can be changed into another prime (117189961092761) 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 as a sum of consecutive naturals, namely, 58594980548880 + 58594980548881.

It is an arithmetic number, because the mean of its divisors is an integer number (58594980548881).

Almost surely, 2^{117189961097761} is an apocalyptic number.

It is an amenable number.

117189961097761 is a deficient number, since it is larger than the sum of its proper divisors (1).

117189961097761 is an equidigital number, since it uses as much as digits as its factorization.

117189961097761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72013536, while the sum is 73.

The spelling of 117189961097761 in words is "one hundred seventeen trillion, one hundred eighty-nine billion, nine hundred sixty-one million, ninety-seven thousand, seven hundred sixty-one".