27777673806 has 16 divisors (see below), whose sum is σ = 55564622544. Its totient is φ = 9257678784.

The previous prime is 27777673793. The next prime is 27777673811. The reversal of 27777673806 is 60837677772.

27777673806 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 27777673806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347215 + ... + 419658.

It is an arithmetic number, because the mean of its divisors is an integer number (3472788909).

Almost surely, 2^27777673806 is an apocalyptic number.

27777673806 is an abundant number, since it is smaller than the sum of its proper divisors (27786948738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27777673806 is a wasteful number, since it uses less digits than its factorization.

27777673806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772915.

The product of its (nonzero) digits is 29042496, while the sum is 60.

The spelling of 27777673806 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-three thousand, eight hundred six".