20324580481 has 4 divisors (see below), whose sum is σ = 20328362964. Its totient is φ = 20320798000.

The previous prime is 20324580473. The next prime is 20324580511. The reversal of 20324580481 is 18408542302.

It is a happy number.

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 10878490000 + 9446090481 = 104300^2 + 97191^2 .

It is a cyclic number.

It is not a de Polignac number, because 20324580481 - 2³ = 20324580473 is a prime.

It is a super-2 number, since 2×20324580481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20324580481.

It is not an unprimeable number, because it can be changed into a prime (20324580461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883170 + ... + 1893931.

It is an arithmetic number, because the mean of its divisors is an integer number (5082090741).

Almost surely, 2^20324580481 is an apocalyptic number.

It is an amenable number.

20324580481 is a deficient number, since it is larger than the sum of its proper divisors (3782483).

20324580481 is an equidigital number, since it uses as much as digits as its factorization.

20324580481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782482.

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 20324580481 in words is "twenty billion, three hundred twenty-four million, five hundred eighty thousand, four hundred eighty-one".