27293725909 has 2 divisors, whose sum is σ = 27293725910. Its totient is φ = 27293725908.

The previous prime is 27293725883. The next prime is 27293725969. The reversal of 27293725909 is 90952739272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16868294884 + 10425431025 = 129878^2 + 102105^2 .

It is a cyclic number.

It is not a de Polignac number, because 27293725909 - 2¹⁷ = 27293594837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27293725909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27293725969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13646862954 + 13646862955.

It is an arithmetic number, because the mean of its divisors is an integer number (13646862955).

Almost surely, 2^27293725909 is an apocalyptic number.

It is an amenable number.

27293725909 is a deficient number, since it is larger than the sum of its proper divisors (1).

27293725909 is an equidigital number, since it uses as much as digits as its factorization.

27293725909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 27293725909 in words is "twenty-seven billion, two hundred ninety-three million, seven hundred twenty-five thousand, nine hundred nine".