20004223185 has 128 divisors (see below), whose sum is σ = 37097625600. Its totient is φ = 10222018560.

The previous prime is 20004223157. The next prime is 20004223201. The reversal of 20004223185 is 58132240002.

20004223185 is a `hidden beast` number, since 200 + 0 + 422 + 31 + 8 + 5 = 666.

It is not a de Polignac number, because 20004223185 - 2¹⁸ = 20003961041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 63104647 + ... + 63104963.

It is an arithmetic number, because the mean of its divisors is an integer number (289825200).

Almost surely, 2^20004223185 is an apocalyptic number.

It is an amenable number.

20004223185 is a deficient number, since it is larger than the sum of its proper divisors (17093402415).

20004223185 is a wasteful number, since it uses less digits than its factorization.

20004223185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 20004223185 its reverse (58132240002), we get a palindrome (78136463187).

The spelling of 20004223185 in words is "twenty billion, four million, two hundred twenty-three thousand, one hundred eighty-five".