27768528363 has 4 divisors (see below), whose sum is σ = 37024704488. Its totient is φ = 18512352240.

The previous prime is 27768528353. The next prime is 27768528373. The reversal of 27768528363 is 36382586772.

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

It is an interprime number because it is at equal distance from previous prime (27768528353) and next prime (27768528373).

It is a de Polignac number, because none of the positive numbers 2^k-27768528363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27768528353) 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, 4628088058 + ... + 4628088063.

It is an arithmetic number, because the mean of its divisors is an integer number (9256176122).

Almost surely, 2^27768528363 is an apocalyptic number.

27768528363 is a deficient number, since it is larger than the sum of its proper divisors (9256176125).

27768528363 is an equidigital number, since it uses as much as digits as its factorization.

27768528363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9256176124.

The product of its digits is 20321280, while the sum is 57.

The spelling of 27768528363 in words is "twenty-seven billion, seven hundred sixty-eight million, five hundred twenty-eight thousand, three hundred sixty-three".