8481978566 has 16 divisors (see below), whose sum is σ = 13167660240. Its totient is φ = 4094891520.

The previous prime is 8481978559. The next prime is 8481978581. The reversal of 8481978566 is 6658791848.

It is a junction number, because it is equal to n+sod(n) for n = 8481978499 and 8481978508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525236 + ... + 541143.

It is an arithmetic number, because the mean of its divisors is an integer number (822978765).

Almost surely, 2^8481978566 is an apocalyptic number.

8481978566 is a deficient number, since it is larger than the sum of its proper divisors (4685681674).

8481978566 is a wasteful number, since it uses less digits than its factorization.

8481978566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066519.

The product of its digits is 23224320, while the sum is 62.

The square root of 8481978566 is about 92097.6577660909. The cubic root of 8481978566 is about 2039.3842308810.

The spelling of 8481978566 in words is "eight billion, four hundred eighty-one million, nine hundred seventy-eight thousand, five hundred sixty-six".