41040520661 has 4 divisors (see below), whose sum is σ = 46903452192. Its totient is φ = 35177589132.

The previous prime is 41040520613. The next prime is 41040520721. The reversal of 41040520661 is 16602504014.

41040520661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16602504014 = 2 ⋅8301252007.

It is a de Polignac number, because none of the positive numbers 2^k-41040520661 is a prime.

It is a super-2 number, since 2×41040520661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41040520601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2931465755 + ... + 2931465768.

It is an arithmetic number, because the mean of its divisors is an integer number (11725863048).

Almost surely, 2^41040520661 is an apocalyptic number.

It is an amenable number.

41040520661 is a deficient number, since it is larger than the sum of its proper divisors (5862931531).

41040520661 is an equidigital number, since it uses as much as digits as its factorization.

41040520661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862931530.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 41040520661 in words is "forty-one billion, forty million, five hundred twenty thousand, six hundred sixty-one".