201850020040 has 16 divisors (see below), whose sum is σ = 454162545180. Its totient is φ = 80740008000.

The previous prime is 201850020007. The next prime is 201850020041. The reversal of 201850020040 is 40020058102.

It can be written as a sum of positive squares in 2 ways, for example, as 200816911876 + 1033108164 = 448126^2 + 32142^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201850019993 and 201850020020.

It is not an unprimeable number, because it can be changed into a prime (201850020041) 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, 2523125211 + ... + 2523125290.

Almost surely, 2^201850020040 is an apocalyptic number.

201850020040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201850020040 is an abundant number, since it is smaller than the sum of its proper divisors (252312525140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201850020040 is a wasteful number, since it uses less digits than its factorization.

201850020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046250512 (or 5046250508 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 201850020040 its reverse (40020058102), we get a palindrome (241870078142).

The spelling of 201850020040 in words is "two hundred one billion, eight hundred fifty million, twenty thousand, forty".