27931049285767 has 4 divisors (see below), whose sum is σ = 28404456900840. Its totient is φ = 27457641670696.

The previous prime is 27931049285759. The next prime is 27931049285779. The reversal of 27931049285767 is 76758294013972.

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 27931049285767 - 2³ = 27931049285759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27931049285696 and 27931049285705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27931049280767) 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, 236703807448 + ... + 236703807565.

It is an arithmetic number, because the mean of its divisors is an integer number (7101114225210).

It is a 2-persistent number, because it is pandigital, and so is 2⋅27931049285767 = 55862098571534, but 3⋅27931049285767 = 83793147857301 is not.

Almost surely, 2^{27931049285767} is an apocalyptic number.

27931049285767 is a deficient number, since it is larger than the sum of its proper divisors (473407615073).

27931049285767 is an equidigital number, since it uses as much as digits as its factorization.

27931049285767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473407615072.

The product of its (nonzero) digits is 320060160, while the sum is 70.

The spelling of 27931049285767 in words is "twenty-seven trillion, nine hundred thirty-one billion, forty-nine million, two hundred eighty-five thousand, seven hundred sixty-seven".