41491245636 has 81 divisors (see below), whose sum is σ = 111468825559. Its totient is φ = 13010343168.

The previous prime is 41491245617. The next prime is 41491245643. The reversal of 41491245636 is 63654219414.

The square root of 41491245636 is 203694.

It is a perfect power (a square), and thus also a powerful number.

41491245636 is a `hidden beast` number, since 4 + 1 + 4 + 9 + 1 + 2 + 4 + 5 + 636 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4396485636 + 37094760000 = 66306^2 + 192600^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41491245591 and 41491245600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 20775790 + ... + 20777786.

Almost surely, 2^41491245636 is an apocalyptic number.

41491245636 is the 203694-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41491245636

41491245636 is an abundant number, since it is smaller than the sum of its proper divisors (69977579923).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

41491245636 is a wasteful number, since it uses less digits than its factorization.

41491245636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038 (or 2019 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 41491245636 in words is "forty-one billion, four hundred ninety-one million, two hundred forty-five thousand, six hundred thirty-six".