20411331443 has 4 divisors (see below), whose sum is σ = 20417477208. Its totient is φ = 20405185680.

The previous prime is 20411331407. The next prime is 20411331463. The reversal of 20411331443 is 34413311402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34413311402 = 2 ⋅17206655701.

It is a cyclic number.

It is not a de Polignac number, because 20411331443 - 2¹⁰ = 20411330419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20411331463) 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, 3067898 + ... + 3074543.

It is an arithmetic number, because the mean of its divisors is an integer number (5104369302).

Almost surely, 2^20411331443 is an apocalyptic number.

20411331443 is a deficient number, since it is larger than the sum of its proper divisors (6145765).

20411331443 is an equidigital number, since it uses as much as digits as its factorization.

20411331443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6145764.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20411331443 its reverse (34413311402), we get a palindrome (54824642845).

The spelling of 20411331443 in words is "twenty billion, four hundred eleven million, three hundred thirty-one thousand, four hundred forty-three".