20041171547 has 2 divisors, whose sum is σ = 20041171548. Its totient is φ = 20041171546.

The previous prime is 20041171529. The next prime is 20041171651. The reversal of 20041171547 is 74517114002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20041171547 - 2¹⁴ = 20041155163 is a prime.

It is not a weakly prime, because it can be changed into another prime (20041171847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020585773 + 10020585774.

It is an arithmetic number, because the mean of its divisors is an integer number (10020585774).

Almost surely, 2^20041171547 is an apocalyptic number.

20041171547 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041171547 is an equidigital number, since it uses as much as digits as its factorization.

20041171547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

Adding to 20041171547 its reverse (74517114002), we get a palindrome (94558285549).

The spelling of 20041171547 in words is "twenty billion, forty-one million, one hundred seventy-one thousand, five hundred forty-seven".