12648449705 has 8 divisors (see below), whose sum is σ = 15192839112. Its totient is φ = 10108960128.

The previous prime is 12648449689. The next prime is 12648449729. The reversal of 12648449705 is 50794484621.

It can be written as a sum of positive squares in 4 ways, for example, as 3063843904 + 9584605801 = 55352^2 + 97901^2 .

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 12648449705 - 2⁴ = 12648449689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219274 + ... + 1229603.

It is an arithmetic number, because the mean of its divisors is an integer number (1899104889).

Almost surely, 2^12648449705 is an apocalyptic number.

It is an amenable number.

12648449705 is a deficient number, since it is larger than the sum of its proper divisors (2544389407).

12648449705 is a wasteful number, since it uses less digits than its factorization.

12648449705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449915.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 12648449705 in words is "twelve billion, six hundred forty-eight million, four hundred forty-nine thousand, seven hundred five".