27561170156 has 12 divisors (see below), whose sum is σ = 51942205392. Its totient is φ = 12720540048.

The previous prime is 27561170137. The next prime is 27561170159. The reversal of 27561170156 is 65107116572.

It is not an unprimeable number, because it can be changed into a prime (27561170159) 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 3 ways as a sum of consecutive naturals, for example, 265011200 + ... + 265011303.

It is an arithmetic number, because the mean of its divisors is an integer number (4328517116).

Almost surely, 2^27561170156 is an apocalyptic number.

27561170156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

27561170156 is a deficient number, since it is larger than the sum of its proper divisors (24381035236).

27561170156 is a wasteful number, since it uses less digits than its factorization.

27561170156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530022520 (or 530022518 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 27561170156 in words is "twenty-seven billion, five hundred sixty-one million, one hundred seventy thousand, one hundred fifty-six".