27751055387 has 4 divisors (see below), whose sum is σ = 30273878616. Its totient is φ = 25228232160.

The previous prime is 27751055363. The next prime is 27751055399. The reversal of 27751055387 is 78355015772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27751055387 - 2³⁴ = 10571186203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27751055317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261411598 + ... + 1261411619.

It is an arithmetic number, because the mean of its divisors is an integer number (7568469654).

Almost surely, 2^27751055387 is an apocalyptic number.

27751055387 is a deficient number, since it is larger than the sum of its proper divisors (2522823229).

27751055387 is a wasteful number, since it uses less digits than its factorization.

27751055387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522823228.

The product of its (nonzero) digits is 2058000, while the sum is 50.

The spelling of 27751055387 in words is "twenty-seven billion, seven hundred fifty-one million, fifty-five thousand, three hundred eighty-seven".