20020181819203 has 4 divisors (see below), whose sum is σ = 20025504923688. Its totient is φ = 20014858714720.

The previous prime is 20020181819191. The next prime is 20020181819213. The reversal of 20020181819203 is 30291818102002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20020181819203 - 2¹³ = 20020181811011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020181819213) 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, 2661546601 + ... + 2661554122.

It is an arithmetic number, because the mean of its divisors is an integer number (5006376230922).

Almost surely, 2^{20020181819203} is an apocalyptic number.

20020181819203 is a deficient number, since it is larger than the sum of its proper divisors (5323104485).

20020181819203 is an equidigital number, since it uses as much as digits as its factorization.

20020181819203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323104484.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 20020181819203 in words is "twenty trillion, twenty billion, one hundred eighty-one million, eight hundred nineteen thousand, two hundred three".