27558275057 has 2 divisors, whose sum is σ = 27558275058. Its totient is φ = 27558275056.

The previous prime is 27558275053. The next prime is 27558275071. The reversal of 27558275057 is 75057285572.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23033829361 + 4524445696 = 151769^2 + 67264^2 .

It is a cyclic number.

It is not a de Polignac number, because 27558275057 - 2² = 27558275053 is a prime.

It is not a weakly prime, because it can be changed into another prime (27558275053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13779137528 + 13779137529.

It is an arithmetic number, because the mean of its divisors is an integer number (13779137529).

Almost surely, 2^27558275057 is an apocalyptic number.

It is an amenable number.

27558275057 is a deficient number, since it is larger than the sum of its proper divisors (1).

27558275057 is an equidigital number, since it uses as much as digits as its factorization.

27558275057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6860000, while the sum is 53.

The spelling of 27558275057 in words is "twenty-seven billion, five hundred fifty-eight million, two hundred seventy-five thousand, fifty-seven".