27385780841 has 4 divisors (see below), whose sum is σ = 27393724500. Its totient is φ = 27377837184.

The previous prime is 27385780819. The next prime is 27385780901. The reversal of 27385780841 is 14808758372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126450025 + 27259330816 = 11245^2 + 165104^2 .

It is a cyclic number.

It is not a de Polignac number, because 27385780841 - 2¹⁸ = 27385518697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27385780141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3966656 + ... + 3973553.

It is an arithmetic number, because the mean of its divisors is an integer number (6848431125).

Almost surely, 2^27385780841 is an apocalyptic number.

It is an amenable number.

27385780841 is a deficient number, since it is larger than the sum of its proper divisors (7943659).

27385780841 is an equidigital number, since it uses as much as digits as its factorization.

27385780841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7943658.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 27385780841 in words is "twenty-seven billion, three hundred eighty-five million, seven hundred eighty thousand, eight hundred forty-one".