20134344320 has 64 divisors (see below), whose sum is σ = 48630040200. Its totient is φ = 7970684928.

The previous prime is 20134344311. The next prime is 20134344323. The reversal of 20134344320 is 2344343102.

It can be written as a sum of positive squares in 4 ways, for example, as 17472609856 + 2661734464 = 132184^2 + 51592^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 20134344320.

It is not an unprimeable number, because it can be changed into a prime (20134344323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100085 + ... + 224244.

Almost surely, 2^20134344320 is an apocalyptic number.

20134344320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134344320 is an abundant number, since it is smaller than the sum of its proper divisors (28495695880).

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

20134344320 is an equidigital number, since it uses as much as digits as its factorization.

20134344320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324445 (or 324433 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20134344320 its reverse (2344343102), we get a palindrome (22478687422).

The spelling of 20134344320 in words is "twenty billion, one hundred thirty-four million, three hundred forty-four thousand, three hundred twenty".