27777452769 has 16 divisors (see below), whose sum is σ = 44892853440. Its totient is φ = 16834819680.

The previous prime is 27777452767. The next prime is 27777452783. The reversal of 27777452769 is 96725477772.

It is not a de Polignac number, because 27777452769 - 2¹ = 27777452767 is a prime.

It is a super-2 number, since 2×27777452769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27777452767) 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 15 ways as a sum of consecutive naturals, for example, 46763092 + ... + 46763685.

It is an arithmetic number, because the mean of its divisors is an integer number (2805803340).

Almost surely, 2^27777452769 is an apocalyptic number.

It is an amenable number.

27777452769 is a deficient number, since it is larger than the sum of its proper divisors (17115400671).

27777452769 is a wasteful number, since it uses less digits than its factorization.

27777452769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93526797 (or 93526791 counting only the distinct ones).

The product of its digits is 72606240, while the sum is 63.

The spelling of 27777452769 in words is "twenty-seven billion, seven hundred seventy-seven million, four hundred fifty-two thousand, seven hundred sixty-nine".