20054543417 has 2 divisors, whose sum is σ = 20054543418. Its totient is φ = 20054543416.

The previous prime is 20054543401. The next prime is 20054543423. The reversal of 20054543417 is 71434545002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13631963536 + 6422579881 = 116756^2 + 80141^2 .

It is a cyclic number.

It is not a de Polignac number, because 20054543417 - 2⁴ = 20054543401 is a prime.

It is not a weakly prime, because it can be changed into another prime (20054543497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027271708 + 10027271709.

It is an arithmetic number, because the mean of its divisors is an integer number (10027271709).

Almost surely, 2^20054543417 is an apocalyptic number.

It is an amenable number.

20054543417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20054543417 is an equidigital number, since it uses as much as digits as its factorization.

20054543417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 20054543417 in words is "twenty billion, fifty-four million, five hundred forty-three thousand, four hundred seventeen".