120188477789 has 2 divisors, whose sum is σ = 120188477790. Its totient is φ = 120188477788.

The previous prime is 120188477779. The next prime is 120188477867. The reversal of 120188477789 is 987774881021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75649752025 + 44538725764 = 275045^2 + 211042^2 .

It is a cyclic number.

It is not a de Polignac number, because 120188477789 - 2³⁶ = 51469001053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120188477749) 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, 60094238894 + 60094238895.

It is an arithmetic number, because the mean of its divisors is an integer number (60094238895).

Almost surely, 2^120188477789 is an apocalyptic number.

It is an amenable number.

120188477789 is a deficient number, since it is larger than the sum of its proper divisors (1).

120188477789 is an equidigital number, since it uses as much as digits as its factorization.

120188477789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12644352, while the sum is 62.

The spelling of 120188477789 in words is "one hundred twenty billion, one hundred eighty-eight million, four hundred seventy-seven thousand, seven hundred eighty-nine".