27968196653 has 4 divisors (see below), whose sum is σ = 27978177408. Its totient is φ = 27958215900.

The previous prime is 27968196649. The next prime is 27968196671. The reversal of 27968196653 is 35669186972.

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.

It is a cyclic number.

It is not a de Polignac number, because 27968196653 - 2² = 27968196649 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 (27968196643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4986173 + ... + 4991778.

It is an arithmetic number, because the mean of its divisors is an integer number (6994544352).

Almost surely, 2^27968196653 is an apocalyptic number.

It is an amenable number.

27968196653 is a deficient number, since it is larger than the sum of its proper divisors (9980755).

27968196653 is an equidigital number, since it uses as much as digits as its factorization.

27968196653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980754.

The product of its digits is 29393280, while the sum is 62.

The spelling of 27968196653 in words is "twenty-seven billion, nine hundred sixty-eight million, one hundred ninety-six thousand, six hundred fifty-three".