27648660539 has 4 divisors (see below), whose sum is σ = 27728340024. Its totient is φ = 27568981056.

The previous prime is 27648660509. The next prime is 27648660541. The reversal of 27648660539 is 93506684672.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27648660539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27648660509) 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, 39839222 + ... + 39839915.

It is an arithmetic number, because the mean of its divisors is an integer number (6932085006).

Almost surely, 2^27648660539 is an apocalyptic number.

27648660539 is a deficient number, since it is larger than the sum of its proper divisors (79679485).

27648660539 is an equidigital number, since it uses as much as digits as its factorization.

27648660539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79679484.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 27648660539 in words is "twenty-seven billion, six hundred forty-eight million, six hundred sixty thousand, five hundred thirty-nine".