27126409099 has 4 divisors (see below), whose sum is σ = 27158211136. Its totient is φ = 27094607064.

The previous prime is 27126409087. The next prime is 27126409103. The reversal of 27126409099 is 99090462172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27126409099 - 2¹³ = 27126400907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27126409019) 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 in 3 ways as a sum of consecutive naturals, for example, 15899739 + ... + 15901444.

It is an arithmetic number, because the mean of its divisors is an integer number (6789552784).

Almost surely, 2^27126409099 is an apocalyptic number.

27126409099 is a deficient number, since it is larger than the sum of its proper divisors (31802037).

27126409099 is an equidigital number, since it uses as much as digits as its factorization.

27126409099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31802036.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 27126409099 in words is "twenty-seven billion, one hundred twenty-six million, four hundred nine thousand, ninety-nine".