4065865861018 has 64 divisors (see below), whose sum is σ = 7043040748800. Its totient is φ = 1745381924352.

The previous prime is 4065865860983. The next prime is 4065865861027. The reversal of 4065865861018 is 8101685685604.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36607333 + ... + 36718231.

It is an arithmetic number, because the mean of its divisors is an integer number (110047511700).

Almost surely, 2^{4065865861018} is an apocalyptic number.

4065865861018 is a deficient number, since it is larger than the sum of its proper divisors (2977174887782).

4065865861018 is a wasteful number, since it uses less digits than its factorization.

4065865861018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112631.

The product of its (nonzero) digits is 11059200, while the sum is 58.

The spelling of 4065865861018 in words is "four trillion, sixty-five billion, eight hundred sixty-five million, eight hundred sixty-one thousand, eighteen".