27605509153 has 2 divisors, whose sum is σ = 27605509154. Its totient is φ = 27605509152.

The previous prime is 27605509123. The next prime is 27605509171. The reversal of 27605509153 is 35190550672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26225535249 + 1379973904 = 161943^2 + 37148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27605509153 is a prime.

It is not a weakly prime, because it can be changed into another prime (27605509123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13802754576 + 13802754577.

It is an arithmetic number, because the mean of its divisors is an integer number (13802754577).

Almost surely, 2^27605509153 is an apocalyptic number.

It is an amenable number.

27605509153 is a deficient number, since it is larger than the sum of its proper divisors (1).

27605509153 is an equidigital number, since it uses as much as digits as its factorization.

27605509153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283500, while the sum is 43.

The spelling of 27605509153 in words is "twenty-seven billion, six hundred five million, five hundred nine thousand, one hundred fifty-three".