27642782812 has 6 divisors (see below), whose sum is σ = 48374869928. Its totient is φ = 13821391404.

The previous prime is 27642782777. The next prime is 27642782821. The reversal of 27642782812 is 21828724672.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3455347848 + ... + 3455347855.

Almost surely, 2^27642782812 is an apocalyptic number.

It is an amenable number.

27642782812 is a deficient number, since it is larger than the sum of its proper divisors (20732087116).

27642782812 is a wasteful number, since it uses less digits than its factorization.

27642782812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6910695707 (or 6910695705 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 49.

The spelling of 27642782812 in words is "twenty-seven billion, six hundred forty-two million, seven hundred eighty-two thousand, eight hundred twelve".