27493408829 has 2 divisors, whose sum is σ = 27493408830. Its totient is φ = 27493408828.

The previous prime is 27493408793. The next prime is 27493408903. The reversal of 27493408829 is 92880439472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25652827225 + 1840581604 = 160165^2 + 42902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27493408829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27493438829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13746704414 + 13746704415.

It is an arithmetic number, because the mean of its divisors is an integer number (13746704415).

Almost surely, 2^27493408829 is an apocalyptic number.

It is an amenable number.

27493408829 is a deficient number, since it is larger than the sum of its proper divisors (1).

27493408829 is an equidigital number, since it uses as much as digits as its factorization.

27493408829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 27493408829 in words is "twenty-seven billion, four hundred ninety-three million, four hundred eight thousand, eight hundred twenty-nine".