20368500185 has 16 divisors (see below), whose sum is σ = 27384875712. Its totient is φ = 14413089600.

The previous prime is 20368500181. The next prime is 20368500227. The reversal of 20368500185 is 58100586302.

It is not a de Polignac number, because 20368500185 - 2² = 20368500181 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20368500181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5002511 + ... + 5006580.

It is an arithmetic number, because the mean of its divisors is an integer number (1711554732).

Almost surely, 2^20368500185 is an apocalyptic number.

It is an amenable number.

20368500185 is a deficient number, since it is larger than the sum of its proper divisors (7016375527).

20368500185 is a wasteful number, since it uses less digits than its factorization.

20368500185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009144.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 20368500185 in words is "twenty billion, three hundred sixty-eight million, five hundred thousand, one hundred eighty-five".