6568149969 has 12 divisors (see below), whose sum is σ = 9512365200. Its totient is φ = 4367210904.

The previous prime is 6568149943. The next prime is 6568149977. The reversal of 6568149969 is 9699418656.

6568149969 is a `hidden beast` number, since 6 + 5 + 6 + 81 + 499 + 69 = 666.

It is not a de Polignac number, because 6568149969 - 2⁸ = 6568149713 is a prime.

It is a super-4 number, since 4×6568149969⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6568149989) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 959379 + ... + 966200.

It is an arithmetic number, because the mean of its divisors is an integer number (792697100).

Almost surely, 2^6568149969 is an apocalyptic number.

It is an amenable number.

6568149969 is a deficient number, since it is larger than the sum of its proper divisors (2944215231).

6568149969 is a wasteful number, since it uses less digits than its factorization.

6568149969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925964 (or 1925961 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The square root of 6568149969 is about 81044.1235932625. The cubic root of 6568149969 is about 1872.7552366124.

The spelling of 6568149969 in words is "six billion, five hundred sixty-eight million, one hundred forty-nine thousand, nine hundred sixty-nine".