27800213686 has 16 divisors (see below), whose sum is σ = 47673632160. Its totient is φ = 11910346560.

The previous prime is 27800213663. The next prime is 27800213719. The reversal of 27800213686 is 68631200872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292845 + ... + 375976.

It is an arithmetic number, because the mean of its divisors is an integer number (2979602010).

Almost surely, 2^27800213686 is an apocalyptic number.

27800213686 is a deficient number, since it is larger than the sum of its proper divisors (19873418474).

27800213686 is a wasteful number, since it uses less digits than its factorization.

27800213686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671799.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 27800213686 in words is "twenty-seven billion, eight hundred million, two hundred thirteen thousand, six hundred eighty-six".