120000019985 has 32 divisors (see below), whose sum is σ = 153404982432. Its totient is φ = 89800704000.

The previous prime is 120000019973. The next prime is 120000019999. The reversal of 120000019985 is 589910000021.

It can be written as a sum of positive squares in 16 ways, for example, as 6220634641 + 113779385344 = 78871^2 + 337312^2 .

It is not a de Polignac number, because 120000019985 - 2⁶ = 120000019921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11422235 + ... + 11432735.

It is an arithmetic number, because the mean of its divisors is an integer number (4793905701).

Almost surely, 2^120000019985 is an apocalyptic number.

It is an amenable number.

120000019985 is a deficient number, since it is larger than the sum of its proper divisors (33404962447).

120000019985 is a wasteful number, since it uses less digits than its factorization.

120000019985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11333.

The product of its (nonzero) digits is 6480, while the sum is 35.

The spelling of 120000019985 in words is "one hundred twenty billion, nineteen thousand, nine hundred eighty-five".