120912745989 has 24 divisors (see below), whose sum is σ = 187830854208. Its totient is φ = 68985154560.

The previous prime is 120912745963. The next prime is 120912746021. The reversal of 120912745989 is 989547219021.

It is not a de Polignac number, because 120912745989 - 2²⁴ = 120895968773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120912745949) 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 23 ways as a sum of consecutive naturals, for example, 547377 + ... + 735830.

It is an arithmetic number, because the mean of its divisors is an integer number (7826285592).

Almost surely, 2^120912745989 is an apocalyptic number.

It is an amenable number.

120912745989 is a deficient number, since it is larger than the sum of its proper divisors (66918108219).

120912745989 is a wasteful number, since it uses less digits than its factorization.

120912745989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283865 (or 1283858 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 57.

The spelling of 120912745989 in words is "one hundred twenty billion, nine hundred twelve million, seven hundred forty-five thousand, nine hundred eighty-nine".