120785708109 has 16 divisors (see below), whose sum is σ = 175977768960. Its totient is φ = 73082848560.

The previous prime is 120785708107. The next prime is 120785708149. The reversal of 120785708109 is 901807587021.

It is a happy number.

It is not a de Polignac number, because 120785708109 - 2¹ = 120785708107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120785708107) 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 in 15 ways as a sum of consecutive naturals, for example, 2994939 + ... + 3035000.

It is an arithmetic number, because the mean of its divisors is an integer number (10998610560).

Almost surely, 2^120785708109 is an apocalyptic number.

It is an amenable number.

120785708109 is a deficient number, since it is larger than the sum of its proper divisors (55192060851).

120785708109 is a wasteful number, since it uses less digits than its factorization.

120785708109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030560.

The product of its (nonzero) digits is 282240, while the sum is 48.

The spelling of 120785708109 in words is "one hundred twenty billion, seven hundred eighty-five million, seven hundred eight thousand, one hundred nine".