27786864287848 has 16 divisors (see below), whose sum is σ = 53508488662980. Its totient is φ = 13517933977728.

The previous prime is 27786864287717. The next prime is 27786864287867. The reversal of 27786864287848 is 84878246868772.

It can be written as a sum of positive squares in 2 ways, for example, as 23178620678724 + 4608243609124 = 4814418^2 + 2146682^2 .

It is a super-2 number, since 2×27786864287848² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46937270461 + ... + 46937271052.

Almost surely, 2^{27786864287848} is an apocalyptic number.

It is an amenable number.

27786864287848 is a deficient number, since it is larger than the sum of its proper divisors (25721624375132).

27786864287848 is a wasteful number, since it uses less digits than its factorization.

27786864287848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93874541556 (or 93874541552 counting only the distinct ones).

The product of its digits is 25895632896, while the sum is 85.

The spelling of 27786864287848 in words is "twenty-seven trillion, seven hundred eighty-six billion, eight hundred sixty-four million, two hundred eighty-seven thousand, eight hundred forty-eight".