20085473019 has 4 divisors (see below), whose sum is σ = 26780630696. Its totient is φ = 13390315344.

The previous prime is 20085473003. The next prime is 20085473027. The reversal of 20085473019 is 91037458002.

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

It is not a de Polignac number, because 20085473019 - 2⁴ = 20085473003 is a prime.

It is a super-2 number, since 2×20085473019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20085453019) 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, 3347578834 + ... + 3347578839.

It is an arithmetic number, because the mean of its divisors is an integer number (6695157674).

Almost surely, 2^20085473019 is an apocalyptic number.

20085473019 is a deficient number, since it is larger than the sum of its proper divisors (6695157677).

20085473019 is an equidigital number, since it uses as much as digits as its factorization.

20085473019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695157676.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 20085473019 in words is "twenty billion, eighty-five million, four hundred seventy-three thousand, nineteen".