20011403441 has 4 divisors (see below), whose sum is σ = 20011849572. Its totient is φ = 20010957312.

The previous prime is 20011403359. The next prime is 20011403471. The reversal of 20011403441 is 14430411002.

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 6724000000 + 13287403441 = 82000^2 + 115271^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011403441 - 2¹⁰ = 20011402417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20011403471) 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, 147176 + ... + 248361.

It is an arithmetic number, because the mean of its divisors is an integer number (5002962393).

Almost surely, 2^20011403441 is an apocalyptic number.

It is an amenable number.

20011403441 is a deficient number, since it is larger than the sum of its proper divisors (446131).

20011403441 is an equidigital number, since it uses as much as digits as its factorization.

20011403441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446130.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20011403441 its reverse (14430411002), we get a palindrome (34441814443).

The spelling of 20011403441 in words is "twenty billion, eleven million, four hundred three thousand, four hundred forty-one".