20446161469 has 2 divisors, whose sum is σ = 20446161470. Its totient is φ = 20446161468.

The previous prime is 20446161403. The next prime is 20446161499. The reversal of 20446161469 is 96416164402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18126583225 + 2319578244 = 134635^2 + 48162^2 .

It is a cyclic number.

It is not a de Polignac number, because 20446161469 - 2¹¹ = 20446159421 is a prime.

It is a super-2 number, since 2×20446161469² (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 (20446161499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10223080734 + 10223080735.

It is an arithmetic number, because the mean of its divisors is an integer number (10223080735).

Almost surely, 2^20446161469 is an apocalyptic number.

It is an amenable number.

20446161469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20446161469 is an equidigital number, since it uses as much as digits as its factorization.

20446161469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 20446161469 in words is "twenty billion, four hundred forty-six million, one hundred sixty-one thousand, four hundred sixty-nine".