20342224520 has 16 divisors (see below), whose sum is σ = 45770005260. Its totient is φ = 8136889792.

The previous prime is 20342224501. The next prime is 20342224537. The reversal of 20342224520 is 2542224302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19299322084 + 1042902436 = 138922^2 + 32294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20342224520.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 254277767 + ... + 254277846.

Almost surely, 2^20342224520 is an apocalyptic number.

20342224520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342224520 is an abundant number, since it is smaller than the sum of its proper divisors (25427780740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20342224520 is a wasteful number, since it uses less digits than its factorization.

20342224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508555624 (or 508555620 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 20342224520 its reverse (2542224302), we get a palindrome (22884448822).

The spelling of 20342224520 in words is "twenty billion, three hundred forty-two million, two hundred twenty-four thousand, five hundred twenty".