27728572895 has 4 divisors (see below), whose sum is σ = 33274287480. Its totient is φ = 22182858312.

The previous prime is 27728572873. The next prime is 27728572897. The reversal of 27728572895 is 59827582772.

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 27728572895 - 2¹² = 27728568799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728572897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2772857285 + ... + 2772857294.

It is an arithmetic number, because the mean of its divisors is an integer number (8318571870).

Almost surely, 2^27728572895 is an apocalyptic number.

27728572895 is a deficient number, since it is larger than the sum of its proper divisors (5545714585).

27728572895 is an equidigital number, since it uses as much as digits as its factorization.

27728572895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545714584.

The product of its digits is 39513600, while the sum is 62.

The spelling of 27728572895 in words is "twenty-seven billion, seven hundred twenty-eight million, five hundred seventy-two thousand, eight hundred ninety-five".