41730041215721 has 4 divisors (see below), whose sum is σ = 41730080762244. Its totient is φ = 41730001669200.

The previous prime is 41730041215711. The next prime is 41730041215757. The reversal of 41730041215721 is 12751214003714.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20809836768400 + 20920204447321 = 4561780^2 + 4573861^2 .

It is a cyclic number.

It is not a de Polignac number, because 41730041215721 - 2⁶ = 41730041215657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41730041215711) 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, 18145790 + ... + 20315751.

It is an arithmetic number, because the mean of its divisors is an integer number (10432520190561).

Almost surely, 2^{41730041215721} is an apocalyptic number.

It is an amenable number.

41730041215721 is a deficient number, since it is larger than the sum of its proper divisors (39546523).

41730041215721 is a wasteful number, since it uses less digits than its factorization.

41730041215721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39546522.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 41730041215721 in words is "forty-one trillion, seven hundred thirty billion, forty-one million, two hundred fifteen thousand, seven hundred twenty-one".