27909302648 has 72 divisors (see below), whose sum is σ = 54291069000. Its totient is φ = 13450117824.

The previous prime is 27909302647. The next prime is 27909302683. The reversal of 27909302648 is 84620390972.

It is a junction number, because it is equal to n+sod(n) for n = 27909302596 and 27909302605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27909302647) by changing a digit.

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 in 17 ways as a sum of consecutive naturals, for example, 140247653 + ... + 140247851.

It is an arithmetic number, because the mean of its divisors is an integer number (754042625).

Almost surely, 2^27909302648 is an apocalyptic number.

It is an amenable number.

27909302648 is a deficient number, since it is larger than the sum of its proper divisors (26381766352).

27909302648 is an equidigital number, since it uses as much as digits as its factorization.

27909302648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 27909302648 in words is "twenty-seven billion, nine hundred nine million, three hundred two thousand, six hundred forty-eight".