27805946143 has 2 divisors, whose sum is σ = 27805946144. Its totient is φ = 27805946142.

The previous prime is 27805946111. The next prime is 27805946171. The reversal of 27805946143 is 34164950872.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27805946143 - 2⁵ = 27805946111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27815946143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902973071 + 13902973072.

It is an arithmetic number, because the mean of its divisors is an integer number (13902973072).

It is a 1-persistent number, because it is pandigital, but 2⋅27805946143 = 55611892286 is not.

Almost surely, 2^27805946143 is an apocalyptic number.

27805946143 is a deficient number, since it is larger than the sum of its proper divisors (1).

27805946143 is an equidigital number, since it uses as much as digits as its factorization.

27805946143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 27805946143 in words is "twenty-seven billion, eight hundred five million, nine hundred forty-six thousand, one hundred forty-three".