20044020019 has 4 divisors (see below), whose sum is σ = 20047456296. Its totient is φ = 20040583744.

The previous prime is 20044019971. The next prime is 20044020049. The reversal of 20044020019 is 91002044002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91002044002 = 2 ⋅45501022001.

It is a cyclic number.

It is not a de Polignac number, because 20044020019 - 2²³ = 20035631411 is a prime.

It is a super-2 number, since 2×20044020019² (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 (20044020049) 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, 1709374 + ... + 1721059.

It is an arithmetic number, because the mean of its divisors is an integer number (5011864074).

Almost surely, 2^20044020019 is an apocalyptic number.

20044020019 is a deficient number, since it is larger than the sum of its proper divisors (3436277).

20044020019 is an equidigital number, since it uses as much as digits as its factorization.

20044020019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436276.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 20044020019 in words is "twenty billion, forty-four million, twenty thousand, nineteen".