41809512137 has 2 divisors, whose sum is σ = 41809512138. Its totient is φ = 41809512136.

The previous prime is 41809512133. The next prime is 41809512163. The reversal of 41809512137 is 73121590814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37402012816 + 4407499321 = 193396^2 + 66389^2 .

It is a cyclic number.

It is not a de Polignac number, because 41809512137 - 2² = 41809512133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 41809512094 and 41809512103.

It is not a weakly prime, because it can be changed into another prime (41809512133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20904756068 + 20904756069.

It is an arithmetic number, because the mean of its divisors is an integer number (20904756069).

Almost surely, 2^41809512137 is an apocalyptic number.

It is an amenable number.

41809512137 is a deficient number, since it is larger than the sum of its proper divisors (1).

41809512137 is an equidigital number, since it uses as much as digits as its factorization.

41809512137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 41809512137 in words is "forty-one billion, eight hundred nine million, five hundred twelve thousand, one hundred thirty-seven".