666078038323118 has 32 divisors (see below), whose sum is σ = 1019123607807360. Its totient is φ = 326420994382560.

The previous prime is 666078038323063. The next prime is 666078038323129. The reversal of 666078038323118 is 811323830870666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96558053 + ... + 103226031.

It is an arithmetic number, because the mean of its divisors is an integer number (31847612743980).

Almost surely, 2^{666078038323118} is an apocalyptic number.

666078038323118 is a deficient number, since it is larger than the sum of its proper divisors (353045569484242).

666078038323118 is a wasteful number, since it uses less digits than its factorization.

666078038323118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671792.

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 666078038323118 in words is "six hundred sixty-six trillion, seventy-eight billion, thirty-eight million, three hundred twenty-three thousand, one hundred eighteen".