27475146557 has 2 divisors, whose sum is σ = 27475146558. Its totient is φ = 27475146556.

The previous prime is 27475146551. The next prime is 27475146623. The reversal of 27475146557 is 75564157472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19193054521 + 8282092036 = 138539^2 + 91006^2 .

It is a cyclic number.

It is not a de Polignac number, because 27475146557 - 2⁶ = 27475146493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27475146499 and 27475146508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27475146551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13737573278 + 13737573279.

It is an arithmetic number, because the mean of its divisors is an integer number (13737573279).

Almost surely, 2^27475146557 is an apocalyptic number.

It is an amenable number.

27475146557 is a deficient number, since it is larger than the sum of its proper divisors (1).

27475146557 is an equidigital number, since it uses as much as digits as its factorization.

27475146557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8232000, while the sum is 53.

The spelling of 27475146557 in words is "twenty-seven billion, four hundred seventy-five million, one hundred forty-six thousand, five hundred fifty-seven".