8456441043721 has 32 divisors (see below), whose sum is σ = 9682907754240. Its totient is φ = 7310309529600.

The previous prime is 8456441043719. The next prime is 8456441043731. The reversal of 8456441043721 is 1273401446548.

It is not a de Polignac number, because 8456441043721 - 2¹ = 8456441043719 is a prime.

It is a super-2 number, since 2×8456441043721² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8456441043731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30645915 + ... + 30920623.

It is an arithmetic number, because the mean of its divisors is an integer number (302590867320).

Almost surely, 2^{8456441043721} is an apocalyptic number.

It is an amenable number.

8456441043721 is a deficient number, since it is larger than the sum of its proper divisors (1226466710519).

8456441043721 is a wasteful number, since it uses less digits than its factorization.

8456441043721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275457.

The product of its (nonzero) digits is 2580480, while the sum is 49.

The spelling of 8456441043721 in words is "eight trillion, four hundred fifty-six billion, four hundred forty-one million, forty-three thousand, seven hundred twenty-one".