20440020319 has 8 divisors (see below), whose sum is σ = 20481387840. Its totient is φ = 20398690176.

The previous prime is 20440020301. The next prime is 20440020347. The reversal of 20440020319 is 91302004402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20440020319 - 2²¹ = 20437923167 is a prime.

It is a super-2 number, since 2×20440020319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20440020293 and 20440020302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440020389) 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 7 ways as a sum of consecutive naturals, for example, 1252299 + ... + 1268515.

It is an arithmetic number, because the mean of its divisors is an integer number (2560173480).

Almost surely, 2^20440020319 is an apocalyptic number.

20440020319 is a deficient number, since it is larger than the sum of its proper divisors (41367521).

20440020319 is a wasteful number, since it uses less digits than its factorization.

20440020319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18689.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 20440020319 in words is "twenty billion, four hundred forty million, twenty thousand, three hundred nineteen".