27918049985 has 16 divisors (see below), whose sum is σ = 38645444736. Its totient is φ = 18964889088.

The previous prime is 27918049949. The next prime is 27918049997. The reversal of 27918049985 is 58994081972.

It is a cyclic number.

It is not a de Polignac number, because 27918049985 - 2²⁸ = 27649614529 is a prime.

It is a Duffinian 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, 3723632 + ... + 3731121.

It is an arithmetic number, because the mean of its divisors is an integer number (2415340296).

Almost surely, 2^27918049985 is an apocalyptic number.

It is an amenable number.

27918049985 is a deficient number, since it is larger than the sum of its proper divisors (10727394751).

27918049985 is a wasteful number, since it uses less digits than its factorization.

27918049985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7454872.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 27918049985 in words is "twenty-seven billion, nine hundred eighteen million, forty-nine thousand, nine hundred eighty-five".