27148358609 has 4 divisors (see below), whose sum is σ = 27148694016. Its totient is φ = 27148023204.

The previous prime is 27148358603. The next prime is 27148358617. The reversal of 27148358609 is 90685384172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27148358609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27148358603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36992 + ... + 235934.

It is an arithmetic number, because the mean of its divisors is an integer number (6787173504).

It is a 1-persistent number, because it is pandigital, but 2⋅27148358609 = 54296717218 is not.

Almost surely, 2^27148358609 is an apocalyptic number.

It is an amenable number.

27148358609 is a deficient number, since it is larger than the sum of its proper divisors (335407).

27148358609 is a wasteful number, since it uses less digits than its factorization.

27148358609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335406.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 27148358609 in words is "twenty-seven billion, one hundred forty-eight million, three hundred fifty-eight thousand, six hundred nine".