8641156670481 has 16 divisors (see below), whose sum is σ = 12128199969600. Its totient is φ = 5457455281728.

The previous prime is 8641156670479. The next prime is 8641156670527. The reversal of 8641156670481 is 1840766511468.

It is not a de Polignac number, because 8641156670481 - 2¹ = 8641156670479 is a prime.

It is a super-2 number, since 2×8641156670481² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (8641156670681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083475 + ... + 4296071.

It is an arithmetic number, because the mean of its divisors is an integer number (758012498100).

Almost surely, 2^{8641156670481} is an apocalyptic number.

It is an amenable number.

8641156670481 is a deficient number, since it is larger than the sum of its proper divisors (3487043299119).

8641156670481 is a wasteful number, since it uses less digits than its factorization.

8641156670481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259808.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 8641156670481 in words is "eight trillion, six hundred forty-one billion, one hundred fifty-six million, six hundred seventy thousand, four hundred eighty-one".