20541360473 has 2 divisors, whose sum is σ = 20541360474. Its totient is φ = 20541360472.

The previous prime is 20541360443. The next prime is 20541360529. The reversal of 20541360473 is 37406314502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20516838169 + 24522304 = 143237^2 + 4952^2 .

It is a cyclic number.

It is not a de Polignac number, because 20541360473 - 2¹⁶ = 20541294937 is a prime.

It is a super-3 number, since 3×20541360473³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20541360403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270680236 + 10270680237.

It is an arithmetic number, because the mean of its divisors is an integer number (10270680237).

Almost surely, 2^20541360473 is an apocalyptic number.

It is an amenable number.

20541360473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541360473 is an equidigital number, since it uses as much as digits as its factorization.

20541360473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 20541360473 its reverse (37406314502), we get a palindrome (57947674975).

The spelling of 20541360473 in words is "twenty billion, five hundred forty-one million, three hundred sixty thousand, four hundred seventy-three".