27677745747 has 48 divisors (see below), whose sum is σ = 43037205120. Its totient is φ = 17078950656.

The previous prime is 27677745743. The next prime is 27677745763. The reversal of 27677745747 is 74754777672.

It is a happy number.

27677745747 is a `hidden beast` number, since 2 + 76 + 7 + 77 + 457 + 47 = 666.

It is not a de Polignac number, because 27677745747 - 2² = 27677745743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27677745743) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2269488 + ... + 2281650.

It is an arithmetic number, because the mean of its divisors is an integer number (896608440).

Almost surely, 2^27677745747 is an apocalyptic number.

27677745747 is a deficient number, since it is larger than the sum of its proper divisors (15359459373).

27677745747 is a wasteful number, since it uses less digits than its factorization.

27677745747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12432 (or 12429 counting only the distinct ones).

The product of its digits is 112943040, while the sum is 63.

The spelling of 27677745747 in words is "twenty-seven billion, six hundred seventy-seven million, seven hundred forty-five thousand, seven hundred forty-seven".