120181011985 has 8 divisors (see below), whose sum is σ = 145703990376. Its totient is φ = 95153625600.

The previous prime is 120181011971. The next prime is 120181011991. The reversal of 120181011985 is 589110181021.

It can be written as a sum of positive squares in 4 ways, for example, as 37596046609 + 82584965376 = 193897^2 + 287376^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120181011985 - 2¹¹ = 120181009937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123897466 + ... + 123898435.

It is an arithmetic number, because the mean of its divisors is an integer number (18212998797).

Almost surely, 2^120181011985 is an apocalyptic number.

It is an amenable number.

120181011985 is a deficient number, since it is larger than the sum of its proper divisors (25522978391).

120181011985 is an equidigital number, since it uses as much as digits as its factorization.

120181011985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247796003.

The product of its (nonzero) digits is 5760, while the sum is 37.

The spelling of 120181011985 in words is "one hundred twenty billion, one hundred eighty-one million, eleven thousand, nine hundred eighty-five".