27982584881 has 2 divisors, whose sum is σ = 27982584882. Its totient is φ = 27982584880.

The previous prime is 27982584871. The next prime is 27982584901. The reversal of 27982584881 is 18848528972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21663129856 + 6319455025 = 147184^2 + 79495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27982584881 is a prime.

It is a super-2 number, since 2×27982584881² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27982584871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13991292440 + 13991292441.

It is an arithmetic number, because the mean of its divisors is an integer number (13991292441).

Almost surely, 2^27982584881 is an apocalyptic number.

It is an amenable number.

27982584881 is a deficient number, since it is larger than the sum of its proper divisors (1).

27982584881 is an equidigital number, since it uses as much as digits as its factorization.

27982584881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20643840, while the sum is 62.

The spelling of 27982584881 in words is "twenty-seven billion, nine hundred eighty-two million, five hundred eighty-four thousand, eight hundred eighty-one".