6780118618 has 32 divisors (see below), whose sum is σ = 13061373696. Its totient is φ = 2565623808.

The previous prime is 6780118589. The next prime is 6780118711. The reversal of 6780118618 is 8168110876.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805671 + ... + 814042.

It is an arithmetic number, because the mean of its divisors is an integer number (408167928).

Almost surely, 2^6780118618 is an apocalyptic number.

6780118618 is a deficient number, since it is larger than the sum of its proper divisors (6281255078).

6780118618 is a wasteful number, since it uses less digits than its factorization.

6780118618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619758.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 6780118618 is about 82341.4756851005. The cubic root of 6780118618 is about 1892.6882992962.

The spelling of 6780118618 in words is "six billion, seven hundred eighty million, one hundred eighteen thousand, six hundred eighteen".