27768725767 has 2 divisors, whose sum is σ = 27768725768. Its totient is φ = 27768725766.

The previous prime is 27768725759. The next prime is 27768725783. The reversal of 27768725767 is 76752786772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27768725767 - 2³ = 27768725759 is a prime.

It is a super-2 number, since 2×27768725767² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27768725699 and 27768725708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27768720767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13884362883 + 13884362884.

It is an arithmetic number, because the mean of its divisors is an integer number (13884362884).

Almost surely, 2^27768725767 is an apocalyptic number.

27768725767 is a deficient number, since it is larger than the sum of its proper divisors (1).

27768725767 is an equidigital number, since it uses as much as digits as its factorization.

27768725767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96808320, while the sum is 64.

The spelling of 27768725767 in words is "twenty-seven billion, seven hundred sixty-eight million, seven hundred twenty-five thousand, seven hundred sixty-seven".