27288866851 has 2 divisors, whose sum is σ = 27288866852. Its totient is φ = 27288866850.

The previous prime is 27288866821. The next prime is 27288866863. The reversal of 27288866851 is 15866888272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27288866851 - 2⁷ = 27288866723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27288866851.

It is not a weakly prime, because it can be changed into another prime (27288866821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13644433425 + 13644433426.

It is an arithmetic number, because the mean of its divisors is an integer number (13644433426).

Almost surely, 2^27288866851 is an apocalyptic number.

27288866851 is a deficient number, since it is larger than the sum of its proper divisors (1).

27288866851 is an equidigital number, since it uses as much as digits as its factorization.

27288866851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20643840, while the sum is 61.

The spelling of 27288866851 in words is "twenty-seven billion, two hundred eighty-eight million, eight hundred sixty-six thousand, eight hundred fifty-one".