27479642977 has 8 divisors (see below), whose sum is σ = 27731515680. Its totient is φ = 27228408480.

The previous prime is 27479642969. The next prime is 27479643029. The reversal of 27479642977 is 77924697472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27479642977 - 2³ = 27479642969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27479642777) 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 7 ways as a sum of consecutive naturals, for example, 72828 + ... + 245485.

It is an arithmetic number, because the mean of its divisors is an integer number (3466439460).

Almost surely, 2^27479642977 is an apocalyptic number.

It is an amenable number.

27479642977 is a deficient number, since it is larger than the sum of its proper divisors (251872703).

27479642977 is a wasteful number, since it uses less digits than its factorization.

27479642977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319103.

The product of its digits is 74680704, while the sum is 64.

The spelling of 27479642977 in words is "twenty-seven billion, four hundred seventy-nine million, six hundred forty-two thousand, nine hundred seventy-seven".