120662780305 has 4 divisors (see below), whose sum is σ = 144795336372. Its totient is φ = 96530224240.

The previous prime is 120662780263. The next prime is 120662780383. The reversal of 120662780305 is 503087266021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91177425936 + 29485354369 = 301956^2 + 171713^2 .

It is not a de Polignac number, because 120662780305 - 2⁹ = 120662779793 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 12066278026 + ... + 12066278035.

It is an arithmetic number, because the mean of its divisors is an integer number (36198834093).

Almost surely, 2^120662780305 is an apocalyptic number.

It is an amenable number.

120662780305 is a deficient number, since it is larger than the sum of its proper divisors (24132556067).

120662780305 is an equidigital number, since it uses as much as digits as its factorization.

120662780305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24132556066.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 120662780305 in words is "one hundred twenty billion, six hundred sixty-two million, seven hundred eighty thousand, three hundred five".