27758066768138 has 8 divisors (see below), whose sum is σ = 47585257316832. Its totient is φ = 11896314329196.

The previous prime is 27758066768093. The next prime is 27758066768153. The reversal of 27758066768138 is 83186766085772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991359527420 + ... + 991359527447.

It is an arithmetic number, because the mean of its divisors is an integer number (5948157164604).

Almost surely, 2^{27758066768138} is an apocalyptic number.

27758066768138 is a deficient number, since it is larger than the sum of its proper divisors (19827190548694).

27758066768138 is a wasteful number, since it uses less digits than its factorization.

27758066768138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982719054876.

The product of its (nonzero) digits is 1137991680, while the sum is 74.

The spelling of 27758066768138 in words is "twenty-seven trillion, seven hundred fifty-eight billion, sixty-six million, seven hundred sixty-eight thousand, one hundred thirty-eight".