8178425066 has 24 divisors (see below), whose sum is σ = 14512400640. Its totient is φ = 3445629432.

The previous prime is 8178425041. The next prime is 8178425069. The reversal of 8178425066 is 6605248718.

It is a self number, because there is not a number n which added to its sum of digits gives 8178425066.

It is not an unprimeable number, because it can be changed into a prime (8178425069) 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, 701450 + ... + 713013.

It is an arithmetic number, because the mean of its divisors is an integer number (604683360).

Almost surely, 2^8178425066 is an apocalyptic number.

8178425066 is a deficient number, since it is larger than the sum of its proper divisors (6333975574).

8178425066 is a wasteful number, since it uses less digits than its factorization.

8178425066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414538 (or 1414531 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 8178425066 is about 90434.6452749166. The cubic root of 8178425066 is about 2014.7595651767.

The spelling of 8178425066 in words is "eight billion, one hundred seventy-eight million, four hundred twenty-five thousand, sixty-six".