41156523509 has 2 divisors, whose sum is σ = 41156523510. Its totient is φ = 41156523508.

The previous prime is 41156523503. The next prime is 41156523539. The reversal of 41156523509 is 90532565114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23659054225 + 17497469284 = 153815^2 + 132278^2 .

It is a cyclic number.

It is not a de Polignac number, because 41156523509 - 2⁴ = 41156523493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41156523503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20578261754 + 20578261755.

It is an arithmetic number, because the mean of its divisors is an integer number (20578261755).

Almost surely, 2^41156523509 is an apocalyptic number.

It is an amenable number.

41156523509 is a deficient number, since it is larger than the sum of its proper divisors (1).

41156523509 is an equidigital number, since it uses as much as digits as its factorization.

41156523509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 41156523509 in words is "forty-one billion, one hundred fifty-six million, five hundred twenty-three thousand, five hundred nine".