41658768521 has 4 divisors (see below), whose sum is σ = 41914343952. Its totient is φ = 41403193092.

The previous prime is 41658768499. The next prime is 41658768527. The reversal of 41658768521 is 12586785614.

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.

It is a cyclic number.

It is not a de Polignac number, because 41658768521 - 2¹⁰ = 41658767497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41658768527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127787471 + ... + 127787796.

It is an arithmetic number, because the mean of its divisors is an integer number (10478585988).

Almost surely, 2^41658768521 is an apocalyptic number.

It is an amenable number.

41658768521 is a deficient number, since it is larger than the sum of its proper divisors (255575431).

41658768521 is a wasteful number, since it uses less digits than its factorization.

41658768521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255575430.

The product of its digits is 3225600, while the sum is 53.

The spelling of 41658768521 in words is "forty-one billion, six hundred fifty-eight million, seven hundred sixty-eight thousand, five hundred twenty-one".