27742749754985 has 16 divisors (see below), whose sum is σ = 33437047587840. Its totient is φ = 22097199944640.

The previous prime is 27742749754913. The next prime is 27742749754999. The reversal of 27742749754985 is 58945794724772.

It is not a de Polignac number, because 27742749754985 - 2³⁴ = 27725569885801 is a prime.

It is a Curzon 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, 8994650 + ... + 11678579.

It is an arithmetic number, because the mean of its divisors is an integer number (2089815474240).

Almost surely, 2^{27742749754985} is an apocalyptic number.

It is an amenable number.

27742749754985 is a deficient number, since it is larger than the sum of its proper divisors (5694297832855).

27742749754985 is a wasteful number, since it uses less digits than its factorization.

27742749754985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20674408.

The product of its digits is 9957427200, while the sum is 80.

The spelling of 27742749754985 in words is "twenty-seven trillion, seven hundred forty-two billion, seven hundred forty-nine million, seven hundred fifty-four thousand, nine hundred eighty-five".