20414240321 has 4 divisors (see below), whose sum is σ = 20420852100. Its totient is φ = 20407628544.

The previous prime is 20414240317. The next prime is 20414240323. The reversal of 20414240321 is 12304241402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9323833600 + 11090406721 = 96560^2 + 105311^2 .

It is a cyclic number.

It is not a de Polignac number, because 20414240321 - 2² = 20414240317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20414240323) 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, 3301256 + ... + 3307433.

It is an arithmetic number, because the mean of its divisors is an integer number (5105213025).

Almost surely, 2^20414240321 is an apocalyptic number.

It is an amenable number.

20414240321 is a deficient number, since it is larger than the sum of its proper divisors (6611779).

20414240321 is an equidigital number, since it uses as much as digits as its factorization.

20414240321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611778.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20414240321 its reverse (12304241402), we get a palindrome (32718481723).

The spelling of 20414240321 in words is "twenty billion, four hundred fourteen million, two hundred forty thousand, three hundred twenty-one".