20001835185 has 16 divisors (see below), whose sum is σ = 32008677120. Its totient is φ = 10665731840.

The previous prime is 20001835177. The next prime is 20001835187. The reversal of 20001835185 is 58153810002.

It is a happy number.

It is not a de Polignac number, because 20001835185 - 2³ = 20001835177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001835187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31080 + ... + 202409.

It is an arithmetic number, because the mean of its divisors is an integer number (2000542320).

Almost surely, 2^20001835185 is an apocalyptic number.

It is an amenable number.

20001835185 is a deficient number, since it is larger than the sum of its proper divisors (12006841935).

20001835185 is a wasteful number, since it uses less digits than its factorization.

20001835185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239208.

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 20001835185 in words is "twenty billion, one million, eight hundred thirty-five thousand, one hundred eighty-five".