120000775009 has 4 divisors (see below), whose sum is σ = 121644621316. Its totient is φ = 118356928704.

The previous prime is 120000775001. The next prime is 120000775043. The reversal of 120000775009 is 900577000021.

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 92619792225 + 27380982784 = 304335^2 + 165472^2 .

It is a cyclic number.

It is not a de Polignac number, because 120000775009 - 2³ = 120000775001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120000775001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821923044 + ... + 821923189.

It is an arithmetic number, because the mean of its divisors is an integer number (30411155329).

Almost surely, 2^120000775009 is an apocalyptic number.

It is an amenable number.

120000775009 is a deficient number, since it is larger than the sum of its proper divisors (1643846307).

120000775009 is an equidigital number, since it uses as much as digits as its factorization.

120000775009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643846306.

The product of its (nonzero) digits is 4410, while the sum is 31.

The spelling of 120000775009 in words is "one hundred twenty billion, seven hundred seventy-five thousand, nine".