27800053553 has 2 divisors, whose sum is σ = 27800053554. Its totient is φ = 27800053552.

The previous prime is 27800053543. The next prime is 27800053579. The reversal of 27800053553 is 35535000872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27789890209 + 10163344 = 166703^2 + 3188^2 .

It is a cyclic number.

It is not a de Polignac number, because 27800053553 - 2⁸ = 27800053297 is a prime.

It is not a weakly prime, because it can be changed into another prime (27800053513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900026776 + 13900026777.

It is an arithmetic number, because the mean of its divisors is an integer number (13900026777).

Almost surely, 2^27800053553 is an apocalyptic number.

It is an amenable number.

27800053553 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800053553 is an equidigital number, since it uses as much as digits as its factorization.

27800053553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 27800053553 in words is "twenty-seven billion, eight hundred million, fifty-three thousand, five hundred fifty-three".