27975704977 has 16 divisors (see below), whose sum is σ = 31854084480. Its totient is φ = 24320419200.

The previous prime is 27975704881. The next prime is 27975704983. The reversal of 27975704977 is 77940757972.

It is not a de Polignac number, because 27975704977 - 2¹¹ = 27975702929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27975704377) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1157149 + ... + 1181077.

It is an arithmetic number, because the mean of its divisors is an integer number (1990880280).

Almost surely, 2^27975704977 is an apocalyptic number.

It is an amenable number.

27975704977 is a deficient number, since it is larger than the sum of its proper divisors (3878379503).

27975704977 is a wasteful number, since it uses less digits than its factorization.

27975704977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28584.

The product of its (nonzero) digits is 54454680, while the sum is 64.

The spelling of 27975704977 in words is "twenty-seven billion, nine hundred seventy-five million, seven hundred four thousand, nine hundred seventy-seven".