8041291915221 has 12 divisors (see below), whose sum is σ = 11615640229440. Its totient is φ = 5360657832360.

The previous prime is 8041291915201. The next prime is 8041291915249. The reversal of 8041291915221 is 1225191921408.

8041291915221 is a `hidden beast` number, since 8 + 0 + 412 + 9 + 1 + 9 + 1 + 5 + 221 = 666.

It is not a de Polignac number, because 8041291915221 - 2¹⁹ = 8041291390933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8041291915201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16703181 + ... + 17177858.

It is an arithmetic number, because the mean of its divisors is an integer number (967970019120).

Almost surely, 2^{8041291915221} is an apocalyptic number.

It is an amenable number.

8041291915221 is a deficient number, since it is larger than the sum of its proper divisors (3574348314219).

8041291915221 is a wasteful number, since it uses less digits than its factorization.

8041291915221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33907416 (or 33907413 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The spelling of 8041291915221 in words is "eight trillion, forty-one billion, two hundred ninety-one million, nine hundred fifteen thousand, two hundred twenty-one".