4961569866 has 16 divisors (see below), whose sum is σ = 10825243488. Its totient is φ = 1503506000.

The previous prime is 4961569819. The next prime is 4961569891. The reversal of 4961569866 is 6689651694.

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, 37587585 + ... + 37587716.

It is an arithmetic number, because the mean of its divisors is an integer number (676577718).

Almost surely, 2^4961569866 is an apocalyptic number.

4961569866 is an abundant number, since it is smaller than the sum of its proper divisors (5863673622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4961569866 is a wasteful number, since it uses less digits than its factorization.

4961569866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75175317.

The product of its digits is 16796160, while the sum is 60.

The square root of 4961569866 is about 70438.4118645502. The cubic root of 4961569866 is about 1705.5837007579.

The spelling of 4961569866 in words is "four billion, nine hundred sixty-one million, five hundred sixty-nine thousand, eight hundred sixty-six".