41545055521 has 4 divisors (see below), whose sum is σ = 41545555200. Its totient is φ = 41544555844.

The previous prime is 41545055479. The next prime is 41545055533. The reversal of 41545055521 is 12555054514.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12555054514 = 2 ⋅6277527257.

It is a cyclic number.

It is not a de Polignac number, because 41545055521 - 2¹⁹ = 41544531233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41545055221) 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, 91801 + ... + 302518.

It is an arithmetic number, because the mean of its divisors is an integer number (10386388800).

Almost surely, 2^41545055521 is an apocalyptic number.

It is an amenable number.

41545055521 is a deficient number, since it is larger than the sum of its proper divisors (499679).

41545055521 is a wasteful number, since it uses less digits than its factorization.

41545055521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499678.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 41545055521 in words is "forty-one billion, five hundred forty-five million, fifty-five thousand, five hundred twenty-one".