41821609812 has 12 divisors (see below), whose sum is σ = 97583756256. Its totient is φ = 13940536600.

The previous prime is 41821609801. The next prime is 41821609829. The reversal of 41821609812 is 21890612814.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742567064 + ... + 1742567087.

It is an arithmetic number, because the mean of its divisors is an integer number (8131979688).

Almost surely, 2^41821609812 is an apocalyptic number.

It is an amenable number.

41821609812 is an abundant number, since it is smaller than the sum of its proper divisors (55762146444).

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

41821609812 is a wasteful number, since it uses less digits than its factorization.

41821609812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485134158 (or 3485134156 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 41821609812 in words is "forty-one billion, eight hundred twenty-one million, six hundred nine thousand, eight hundred twelve".