27771755047 has 8 divisors (see below), whose sum is σ = 27866125440. Its totient is φ = 27677510400.

The previous prime is 27771755003. The next prime is 27771755093. The reversal of 27771755047 is 74055717772.

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 27771755047 - 2⁷ = 27771754919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27771754985 and 27771755003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27771755447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422058 + ... + 483400.

It is an arithmetic number, because the mean of its divisors is an integer number (3483265680).

Almost surely, 2^27771755047 is an apocalyptic number.

27771755047 is a deficient number, since it is larger than the sum of its proper divisors (94370393).

27771755047 is a wasteful number, since it uses less digits than its factorization.

27771755047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62873.

The product of its (nonzero) digits is 3361400, while the sum is 52.

The spelling of 27771755047 in words is "twenty-seven billion, seven hundred seventy-one million, seven hundred fifty-five thousand, forty-seven".