27728746365 has 16 divisors (see below), whose sum is σ = 44385264000. Its totient is φ = 14782241472.

The previous prime is 27728746303. The next prime is 27728746403. The reversal of 27728746365 is 56364782772.

It is not a de Polignac number, because 27728746365 - 2⁹ = 27728745853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365665 + ... + 434934.

It is an arithmetic number, because the mean of its divisors is an integer number (2774079000).

Almost surely, 2^27728746365 is an apocalyptic number.

It is an amenable number.

27728746365 is a deficient number, since it is larger than the sum of its proper divisors (16656517635).

27728746365 is a wasteful number, since it uses less digits than its factorization.

27728746365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802916.

The product of its digits is 23708160, while the sum is 57.

The spelling of 27728746365 in words is "twenty-seven billion, seven hundred twenty-eight million, seven hundred forty-six thousand, three hundred sixty-five".