27656366375 has 16 divisors (see below), whose sum is σ = 37652887584. Its totient is φ = 20113720000.

The previous prime is 27656366371. The next prime is 27656366393. The reversal of 27656366375 is 57366365672.

It is not a de Polignac number, because 27656366375 - 2² = 27656366371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27656366375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27656366371) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10055486 + ... + 10058235.

It is an arithmetic number, because the mean of its divisors is an integer number (2353305474).

Almost surely, 2^27656366375 is an apocalyptic number.

27656366375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27656366375 is a deficient number, since it is larger than the sum of its proper divisors (9996521209).

27656366375 is a wasteful number, since it uses less digits than its factorization.

27656366375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20113747 (or 20113737 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 56.

The spelling of 27656366375 in words is "twenty-seven billion, six hundred fifty-six million, three hundred sixty-six thousand, three hundred seventy-five".