27556556141 has 2 divisors, whose sum is σ = 27556556142. Its totient is φ = 27556556140.

The previous prime is 27556556087. The next prime is 27556556173. The reversal of 27556556141 is 14165565572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26123933641 + 1432622500 = 161629^2 + 37850^2 .

It is a cyclic number.

It is not a de Polignac number, because 27556556141 - 2⁶ = 27556556077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27556556441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13778278070 + 13778278071.

It is an arithmetic number, because the mean of its divisors is an integer number (13778278071).

Almost surely, 2^27556556141 is an apocalyptic number.

It is an amenable number.

27556556141 is a deficient number, since it is larger than the sum of its proper divisors (1).

27556556141 is an equidigital number, since it uses as much as digits as its factorization.

27556556141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 47.

The spelling of 27556556141 in words is "twenty-seven billion, five hundred fifty-six million, five hundred fifty-six thousand, one hundred forty-one".