41021205520 has 20 divisors (see below), whose sum is σ = 95374303020. Its totient is φ = 16408482176.

The previous prime is 41021205509. The next prime is 41021205527. The reversal of 41021205520 is 2550212014.

It can be written as a sum of positive squares in 2 ways, for example, as 14324259856 + 26696945664 = 119684^2 + 163392^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 41021205491 and 41021205500.

It is not an unprimeable number, because it can be changed into a prime (41021205527) 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, 256382455 + ... + 256382614.

It is an arithmetic number, because the mean of its divisors is an integer number (4768715151).

Almost surely, 2^41021205520 is an apocalyptic number.

41021205520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41021205520 is an abundant number, since it is smaller than the sum of its proper divisors (54353097500).

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

41021205520 is a wasteful number, since it uses less digits than its factorization.

41021205520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512765082 (or 512765076 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 41021205520 its reverse (2550212014), we get a palindrome (43571417534).

The spelling of 41021205520 in words is "forty-one billion, twenty-one million, two hundred five thousand, five hundred twenty".