20406137041 has 2 divisors, whose sum is σ = 20406137042. Its totient is φ = 20406137040.

The previous prime is 20406137023. The next prime is 20406137077. The reversal of 20406137041 is 14073160402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11293525441 + 9112611600 = 106271^2 + 95460^2 .

It is a cyclic number.

It is not a de Polignac number, because 20406137041 - 2⁹ = 20406136529 is a prime.

It is not a weakly prime, because it can be changed into another prime (20406137021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10203068520 + 10203068521.

It is an arithmetic number, because the mean of its divisors is an integer number (10203068521).

Almost surely, 2^20406137041 is an apocalyptic number.

It is an amenable number.

20406137041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20406137041 is an equidigital number, since it uses as much as digits as its factorization.

20406137041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 20406137041 its reverse (14073160402), we get a palindrome (34479297443).

The spelling of 20406137041 in words is "twenty billion, four hundred six million, one hundred thirty-seven thousand, forty-one".