120689907787 has 2 divisors, whose sum is σ = 120689907788. Its totient is φ = 120689907786.

The previous prime is 120689907781. The next prime is 120689907803. The reversal of 120689907787 is 787709986021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120689907787 is a prime.

It is not a weakly prime, because it can be changed into another prime (120689907781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60344953893 + 60344953894.

It is an arithmetic number, because the mean of its divisors is an integer number (60344953894).

Almost surely, 2^120689907787 is an apocalyptic number.

120689907787 is a deficient number, since it is larger than the sum of its proper divisors (1).

120689907787 is an equidigital number, since it uses as much as digits as its factorization.

120689907787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21337344, while the sum is 64.

The spelling of 120689907787 in words is "one hundred twenty billion, six hundred eighty-nine million, nine hundred seven thousand, seven hundred eighty-seven".