20444896469 has 2 divisors, whose sum is σ = 20444896470. Its totient is φ = 20444896468.

The previous prime is 20444896463. The next prime is 20444896481. The reversal of 20444896469 is 96469844402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18370549444 + 2074347025 = 135538^2 + 45545^2 .

It is a cyclic number.

It is not a de Polignac number, because 20444896469 - 2²⁴ = 20428119253 is a prime.

It is a super-2 number, since 2×20444896469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20444896463) 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 as a sum of consecutive naturals, namely, 10222448234 + 10222448235.

It is an arithmetic number, because the mean of its divisors is an integer number (10222448235).

Almost surely, 2^20444896469 is an apocalyptic number.

It is an amenable number.

20444896469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444896469 is an equidigital number, since it uses as much as digits as its factorization.

20444896469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11943936, while the sum is 56.

The spelling of 20444896469 in words is "twenty billion, four hundred forty-four million, eight hundred ninety-six thousand, four hundred sixty-nine".