120809384387 has 4 divisors (see below), whose sum is σ = 122054842056. Its totient is φ = 119563926720.

The previous prime is 120809384359. The next prime is 120809384401. The reversal of 120809384387 is 783483908021.

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

It is a cyclic number.

It is not a de Polignac number, because 120809384387 - 2⁶ = 120809384323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120809384317) by changing a digit.

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, 622728689 + ... + 622728882.

It is an arithmetic number, because the mean of its divisors is an integer number (30513710514).

Almost surely, 2^120809384387 is an apocalyptic number.

120809384387 is a deficient number, since it is larger than the sum of its proper divisors (1245457669).

120809384387 is an equidigital number, since it uses as much as digits as its factorization.

120809384387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245457668.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 120809384387 in words is "one hundred twenty billion, eight hundred nine million, three hundred eighty-four thousand, three hundred eighty-seven".