27651768655 has 96 divisors (see below), whose sum is σ = 41472345600. Its totient is φ = 17284430592.

The previous prime is 27651768643. The next prime is 27651768673. The reversal of 27651768655 is 55686715672.

It is not a de Polignac number, because 27651768655 - 2⁷ = 27651768527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27651768655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 176125837 + ... + 176125993.

It is an arithmetic number, because the mean of its divisors is an integer number (432003600).

Almost surely, 2^27651768655 is an apocalyptic number.

27651768655 is a deficient number, since it is larger than the sum of its proper divisors (13820576945).

27651768655 is a wasteful number, since it uses less digits than its factorization.

27651768655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 314 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 58.

The spelling of 27651768655 in words is "twenty-seven billion, six hundred fifty-one million, seven hundred sixty-eight thousand, six hundred fifty-five".