65997782846018 has 16 divisors (see below), whose sum is σ = 105290052940800. Its totient is φ = 30918507602496.

The previous prime is 65997782845999. The next prime is 65997782846041. The reversal of 65997782846018 is 81064828779956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4352259818 + ... + 4352274981.

It is an arithmetic number, because the mean of its divisors is an integer number (6580628308800).

Almost surely, 2^{65997782846018} is an apocalyptic number.

65997782846018 is a deficient number, since it is larger than the sum of its proper divisors (39292270094782).

65997782846018 is a wasteful number, since it uses less digits than its factorization.

65997782846018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8704535041.

The product of its (nonzero) digits is 2926264320, while the sum is 80.

The spelling of 65997782846018 in words is "sixty-five trillion, nine hundred ninety-seven billion, seven hundred eighty-two million, eight hundred forty-six thousand, eighteen".