20057204473 has 2 divisors, whose sum is σ = 20057204474. Its totient is φ = 20057204472.

The previous prime is 20057204443. The next prime is 20057204543. The reversal of 20057204473 is 37440275002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11944959849 + 8112244624 = 109293^2 + 90068^2 .

It is a cyclic number.

It is not a de Polignac number, because 20057204473 - 2⁹ = 20057203961 is a prime.

It is not a weakly prime, because it can be changed into another prime (20057204413) 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, 10028602236 + 10028602237.

It is an arithmetic number, because the mean of its divisors is an integer number (10028602237).

Almost surely, 2^20057204473 is an apocalyptic number.

It is an amenable number.

20057204473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20057204473 is an equidigital number, since it uses as much as digits as its factorization.

20057204473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 34.

Adding to 20057204473 its reverse (37440275002), we get a palindrome (57497479475).

The spelling of 20057204473 in words is "twenty billion, fifty-seven million, two hundred four thousand, four hundred seventy-three".