205820632027 has 2 divisors, whose sum is σ = 205820632028. Its totient is φ = 205820632026.

The previous prime is 205820631997. The next prime is 205820632091. The reversal of 205820632027 is 720236028502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205820632027 is a prime.

It is not a weakly prime, because it can be changed into another prime (205820632327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102910316013 + 102910316014.

It is an arithmetic number, because the mean of its divisors is an integer number (102910316014).

Almost surely, 2^205820632027 is an apocalyptic number.

205820632027 is a deficient number, since it is larger than the sum of its proper divisors (1).

205820632027 is an equidigital number, since it uses as much as digits as its factorization.

205820632027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 205820632027 in words is "two hundred five billion, eight hundred twenty million, six hundred thirty-two thousand, twenty-seven".