27248578769 has 4 divisors (see below), whose sum is σ = 27256821744. Its totient is φ = 27240335796.

The previous prime is 27248578757. The next prime is 27248578771. The reversal of 27248578769 is 96787584272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27248578769 - 2¹² = 27248574673 is a prime.

It is a super-2 number, since 2×27248578769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27248578739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4116527 + ... + 4123140.

It is an arithmetic number, because the mean of its divisors is an integer number (6814205436).

Almost surely, 2^27248578769 is an apocalyptic number.

It is an amenable number.

27248578769 is a deficient number, since it is larger than the sum of its proper divisors (8242975).

27248578769 is an equidigital number, since it uses as much as digits as its factorization.

27248578769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242974.

The product of its digits is 94832640, while the sum is 65.

The spelling of 27248578769 in words is "twenty-seven billion, two hundred forty-eight million, five hundred seventy-eight thousand, seven hundred sixty-nine".