27756773123 has 2 divisors, whose sum is σ = 27756773124. Its totient is φ = 27756773122.

The previous prime is 27756773117. The next prime is 27756773173. The reversal of 27756773123 is 32137765772.

It is an a-pointer prime, because the next prime (27756773173) can be obtained adding 27756773123 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27756773123 - 2¹⁸ = 27756510979 is a prime.

It is not a weakly prime, because it can be changed into another prime (27756773113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13878386561 + 13878386562.

It is an arithmetic number, because the mean of its divisors is an integer number (13878386562).

Almost surely, 2^27756773123 is an apocalyptic number.

27756773123 is a deficient number, since it is larger than the sum of its proper divisors (1).

27756773123 is an equidigital number, since it uses as much as digits as its factorization.

27756773123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2593080, while the sum is 50.

The spelling of 27756773123 in words is "twenty-seven billion, seven hundred fifty-six million, seven hundred seventy-three thousand, one hundred twenty-three".