20404525343441 has 32 divisors (see below), whose sum is σ = 21844926518688. Its totient is φ = 18991917711360.

The previous prime is 20404525343413. The next prime is 20404525343491. The reversal of 20404525343441 is 14434352540402.

It can be written as a sum of positive squares in 16 ways, for example, as 2711607716416 + 17692917627025 = 1646696^2 + 4206295^2 .

It is not a de Polignac number, because 20404525343441 - 2³⁴ = 20387345474257 is a prime.

It is a super-2 number, since 2×20404525343441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404525343491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3030521711 + ... + 3030528443.

It is an arithmetic number, because the mean of its divisors is an integer number (682653953709).

Almost surely, 2^{20404525343441} is an apocalyptic number.

It is an amenable number.

20404525343441 is a deficient number, since it is larger than the sum of its proper divisors (1440401175247).

20404525343441 is a wasteful number, since it uses less digits than its factorization.

20404525343441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11621.

The product of its (nonzero) digits is 921600, while the sum is 41.

Adding to 20404525343441 its reverse (14434352540402), we get a palindrome (34838877883843).

The spelling of 20404525343441 in words is "twenty trillion, four hundred four billion, five hundred twenty-five million, three hundred forty-three thousand, four hundred forty-one".