20168370187 has 16 divisors (see below), whose sum is σ = 23296937472. Its totient is φ = 17102090880.

The previous prime is 20168370179. The next prime is 20168370193. The reversal of 20168370187 is 78107386102.

It is not a de Polignac number, because 20168370187 - 2³ = 20168370179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20168370107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538387 + ... + 574627.

It is an arithmetic number, because the mean of its divisors is an integer number (1456058592).

Almost surely, 2^20168370187 is an apocalyptic number.

20168370187 is a deficient number, since it is larger than the sum of its proper divisors (3128567285).

20168370187 is a wasteful number, since it uses less digits than its factorization.

20168370187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37098.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 20168370187 in words is "twenty billion, one hundred sixty-eight million, three hundred seventy thousand, one hundred eighty-seven".