27853432457 has 2 divisors, whose sum is σ = 27853432458. Its totient is φ = 27853432456.

The previous prime is 27853432441. The next prime is 27853432463. The reversal of 27853432457 is 75423435872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25172678281 + 2680754176 = 158659^2 + 51776^2 .

It is a cyclic number.

It is not a de Polignac number, because 27853432457 - 2⁴ = 27853432441 is a prime.

It is a super-2 number, since 2×27853432457² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27853432487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13926716228 + 13926716229.

It is an arithmetic number, because the mean of its divisors is an integer number (13926716229).

Almost surely, 2^27853432457 is an apocalyptic number.

It is an amenable number.

27853432457 is a deficient number, since it is larger than the sum of its proper divisors (1).

27853432457 is an equidigital number, since it uses as much as digits as its factorization.

27853432457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5644800, while the sum is 50.

The spelling of 27853432457 in words is "twenty-seven billion, eight hundred fifty-three million, four hundred thirty-two thousand, four hundred fifty-seven".