27775732845 has 64 divisors (see below), whose sum is σ = 51827466240. Its totient is φ = 12440563200.

The previous prime is 27775732819. The next prime is 27775732861. The reversal of 27775732845 is 54823757772.

It is not a de Polignac number, because 27775732845 - 2⁵ = 27775732813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1073865 + ... + 1099425.

It is an arithmetic number, because the mean of its divisors is an integer number (809804160).

Almost surely, 2^27775732845 is an apocalyptic number.

It is an amenable number.

27775732845 is a deficient number, since it is larger than the sum of its proper divisors (24051733395).

27775732845 is a wasteful number, since it uses less digits than its factorization.

27775732845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25786.

The product of its digits is 23049600, while the sum is 57.

The spelling of 27775732845 in words is "twenty-seven billion, seven hundred seventy-five million, seven hundred thirty-two thousand, eight hundred forty-five".