27768382618 has 32 divisors (see below), whose sum is σ = 45381219840. Its totient is φ = 12694812480.

The previous prime is 27768382583. The next prime is 27768382633. The reversal of 27768382618 is 81628386772.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407796 + ... + 470992.

It is an arithmetic number, because the mean of its divisors is an integer number (1418163120).

Almost surely, 2^27768382618 is an apocalyptic number.

27768382618 is a deficient number, since it is larger than the sum of its proper divisors (17612837222).

27768382618 is a wasteful number, since it uses less digits than its factorization.

27768382618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63622.

The product of its digits is 10838016, while the sum is 58.

The spelling of 27768382618 in words is "twenty-seven billion, seven hundred sixty-eight million, three hundred eighty-two thousand, six hundred eighteen".