27919387229 has 2 divisors, whose sum is σ = 27919387230. Its totient is φ = 27919387228.

The previous prime is 27919387219. The next prime is 27919387241. The reversal of 27919387229 is 92278391972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22695422500 + 5223964729 = 150650^2 + 72277^2 .

It is a cyclic number.

It is not a de Polignac number, because 27919387229 - 2²⁸ = 27650951773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27919387219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13959693614 + 13959693615.

It is an arithmetic number, because the mean of its divisors is an integer number (13959693615).

Almost surely, 2^27919387229 is an apocalyptic number.

It is an amenable number.

27919387229 is a deficient number, since it is larger than the sum of its proper divisors (1).

27919387229 is an equidigital number, since it uses as much as digits as its factorization.

27919387229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 59.

The spelling of 27919387229 in words is "twenty-seven billion, nine hundred nineteen million, three hundred eighty-seven thousand, two hundred twenty-nine".