27668706813 has 192 divisors, whose sum is σ = 51199948800. Its totient is φ = 14713436160.

The previous prime is 27668706803. The next prime is 27668706839. The reversal of 27668706813 is 31860786672.

It is not a de Polignac number, because 27668706813 - 2⁵ = 27668706781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27668706813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27668706803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 63026448 + ... + 63026886.

It is an arithmetic number, because the mean of its divisors is an integer number (266666400).

Almost surely, 2^27668706813 is an apocalyptic number.

It is an amenable number.

27668706813 is a deficient number, since it is larger than the sum of its proper divisors (23531241987).

27668706813 is a wasteful number, since it uses less digits than its factorization.

27668706813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 27668706813 in words is "twenty-seven billion, six hundred sixty-eight million, seven hundred six thousand, eight hundred thirteen".