12648350661311 has 4 divisors (see below), whose sum is σ = 12697566033792. Its totient is φ = 12599135288832.

The previous prime is 12648350661293. The next prime is 12648350661319. The reversal of 12648350661311 is 11316605384621.

It is a happy number.

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 12648350661311 - 2¹⁴ = 12648350644927 is a prime.

It is a super-2 number, since 2×12648350661311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12648350661319) 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, 24607685855 + ... + 24607686368.

It is an arithmetic number, because the mean of its divisors is an integer number (3174391508448).

Almost surely, 2^{12648350661311} is an apocalyptic number.

12648350661311 is a deficient number, since it is larger than the sum of its proper divisors (49215372481).

12648350661311 is an equidigital number, since it uses as much as digits as its factorization.

12648350661311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49215372480.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 12648350661311 in words is "twelve trillion, six hundred forty-eight billion, three hundred fifty million, six hundred sixty-one thousand, three hundred eleven".