20401141441 has 8 divisors (see below), whose sum is σ = 20797174440. Its totient is φ = 20005519872.

The previous prime is 20401141393. The next prime is 20401141457. The reversal of 20401141441 is 14414110402.

It can be written as a sum of positive squares in 4 ways, for example, as 3082581441 + 17318560000 = 55521^2 + 131600^2 .

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 20401141441 - 2²³ = 20392752833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401141741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770 + ... + 202003.

It is an arithmetic number, because the mean of its divisors is an integer number (2599646805).

Almost surely, 2^20401141441 is an apocalyptic number.

It is an amenable number.

20401141441 is a deficient number, since it is larger than the sum of its proper divisors (396032999).

20401141441 is a wasteful number, since it uses less digits than its factorization.

20401141441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205715.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 20401141441 its reverse (14414110402), we get a palindrome (34815251843).

The spelling of 20401141441 in words is "twenty billion, four hundred one million, one hundred forty-one thousand, four hundred forty-one".