20324517519 has 4 divisors (see below), whose sum is σ = 27099356696. Its totient is φ = 13549678344.

The previous prime is 20324517511. The next prime is 20324517541. The reversal of 20324517519 is 91571542302.

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

It is not a de Polignac number, because 20324517519 - 2³ = 20324517511 is a prime.

It is a super-2 number, since 2×20324517519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324517511) 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, 3387419584 + ... + 3387419589.

It is an arithmetic number, because the mean of its divisors is an integer number (6774839174).

Almost surely, 2^20324517519 is an apocalyptic number.

20324517519 is a deficient number, since it is larger than the sum of its proper divisors (6774839177).

20324517519 is an equidigital number, since it uses as much as digits as its factorization.

20324517519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774839176.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 20324517519 in words is "twenty billion, three hundred twenty-four million, five hundred seventeen thousand, five hundred nineteen".