27648458749 has 8 divisors (see below), whose sum is σ = 28173626712. Its totient is φ = 27123420480.

The previous prime is 27648458701. The next prime is 27648458809. The reversal of 27648458749 is 94785484672.

It can be written as a sum of positive squares in 4 ways, for example, as 7401160900 + 20247297849 = 86030^2 + 142293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27648458749 - 2⁹ = 27648458237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27648459749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471627 + ... + 526999.

It is an arithmetic number, because the mean of its divisors is an integer number (3521703339).

Almost surely, 2^27648458749 is an apocalyptic number.

It is an amenable number.

27648458749 is a deficient number, since it is larger than the sum of its proper divisors (525167963).

27648458749 is an equidigital number, since it uses as much as digits as its factorization.

27648458749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64847.

The product of its digits is 108380160, while the sum is 64.

The spelling of 27648458749 in words is "twenty-seven billion, six hundred forty-eight million, four hundred fifty-eight thousand, seven hundred forty-nine".