27657937816 has 8 divisors (see below), whose sum is σ = 51858633420. Its totient is φ = 13828968904.

The previous prime is 27657937793. The next prime is 27657937817. The reversal of 27657937816 is 61873975672.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27657937817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1728621106 + ... + 1728621121.

Almost surely, 2^27657937816 is an apocalyptic number.

It is an amenable number.

27657937816 is a deficient number, since it is larger than the sum of its proper divisors (24200695604).

27657937816 is a wasteful number, since it uses less digits than its factorization.

27657937816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457242233 (or 3457242229 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 61.

The spelling of 27657937816 in words is "twenty-seven billion, six hundred fifty-seven million, nine hundred thirty-seven thousand, eight hundred sixteen".