188120765407669 has 2 divisors, whose sum is σ = 188120765407670. Its totient is φ = 188120765407668.

The previous prime is 188120765407573. The next prime is 188120765407681. The reversal of 188120765407669 is 966704567021881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123599918002500 + 64520847405169 = 11117550^2 + 8032487^2 .

It is an emirp because it is prime and its reverse (966704567021881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188120765407669 - 2¹¹ = 188120765405621 is a prime.

It is a super-2 number, since 2×188120765407669² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188120765407598 and 188120765407607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188120765405669) 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, 94060382703834 + 94060382703835.

It is an arithmetic number, because the mean of its divisors is an integer number (94060382703835).

Almost surely, 2^{188120765407669} is an apocalyptic number.

It is an amenable number.

188120765407669 is a deficient number, since it is larger than the sum of its proper divisors (1).

188120765407669 is an equidigital number, since it uses as much as digits as its factorization.

188120765407669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243855360, while the sum is 70.

The spelling of 188120765407669 in words is "one hundred eighty-eight trillion, one hundred twenty billion, seven hundred sixty-five million, four hundred seven thousand, six hundred sixty-nine".