8665543942 has 16 divisors (see below), whose sum is σ = 14232704400. Its totient is φ = 3924238240.

The previous prime is 8665543933. The next prime is 8665543961. The reversal of 8665543942 is 2493455668.

It is a self number, because there is not a number n which added to its sum of digits gives 8665543942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726217 + ... + 738052.

It is an arithmetic number, because the mean of its divisors is an integer number (889544025).

Almost surely, 2^8665543942 is an apocalyptic number.

8665543942 is a deficient number, since it is larger than the sum of its proper divisors (5567160458).

8665543942 is a wasteful number, since it uses less digits than its factorization.

8665543942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464551.

The product of its digits is 6220800, while the sum is 52.

The square root of 8665543942 is about 93088.9034310750. The cubic root of 8665543942 is about 2053.9913467139.

The spelling of 8665543942 in words is "eight billion, six hundred sixty-five million, five hundred forty-three thousand, nine hundred forty-two".