27771262879 has 2 divisors, whose sum is σ = 27771262880. Its totient is φ = 27771262878.

The previous prime is 27771262843. The next prime is 27771262903. The reversal of 27771262879 is 97826217772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27771262879 - 2²¹ = 27769165727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27771266879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885631439 + 13885631440.

It is an arithmetic number, because the mean of its divisors is an integer number (13885631440).

Almost surely, 2^27771262879 is an apocalyptic number.

27771262879 is a deficient number, since it is larger than the sum of its proper divisors (1).

27771262879 is an equidigital number, since it uses as much as digits as its factorization.

27771262879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856, while the sum is 58.

The spelling of 27771262879 in words is "twenty-seven billion, seven hundred seventy-one million, two hundred sixty-two thousand, eight hundred seventy-nine".