27642635723203 has 2 divisors, whose sum is σ = 27642635723204. Its totient is φ = 27642635723202.

The previous prime is 27642635723191. The next prime is 27642635723237. The reversal of 27642635723203 is 30232753624672.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27642635723203 is a prime.

It is not a weakly prime, because it can be changed into another prime (27642635723303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13821317861601 + 13821317861602.

It is an arithmetic number, because the mean of its divisors is an integer number (13821317861602).

Almost surely, 2^{27642635723203} is an apocalyptic number.

27642635723203 is a deficient number, since it is larger than the sum of its proper divisors (1).

27642635723203 is an equidigital number, since it uses as much as digits as its factorization.

27642635723203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 52.

The spelling of 27642635723203 in words is "twenty-seven trillion, six hundred forty-two billion, six hundred thirty-five million, seven hundred twenty-three thousand, two hundred three".