20355343441 has 8 divisors (see below), whose sum is σ = 20559628544. Its totient is φ = 20152067760.

The previous prime is 20355343391. The next prime is 20355343451. The reversal of 20355343441 is 14434355302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20355343441 - 2¹¹ = 20355341393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20355343397 and 20355343406.

It is not an unprimeable number, because it can be changed into a prime (20355343451) 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 7 ways as a sum of consecutive naturals, for example, 211791 + ... + 292516.

It is an arithmetic number, because the mean of its divisors is an integer number (2569953568).

Almost surely, 2^20355343441 is an apocalyptic number.

It is an amenable number.

20355343441 is a deficient number, since it is larger than the sum of its proper divisors (204285103).

20355343441 is a wasteful number, since it uses less digits than its factorization.

20355343441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504711.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 20355343441 its reverse (14434355302), we get a palindrome (34789698743).

The spelling of 20355343441 in words is "twenty billion, three hundred fifty-five million, three hundred forty-three thousand, four hundred forty-one".