27769196773 has 4 divisors (see below), whose sum is σ = 27769893228. Its totient is φ = 27768500320.

The previous prime is 27769196699. The next prime is 27769196789. The reversal of 27769196773 is 37769196772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24285482244 + 3483714529 = 155838^2 + 59023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27769196773 is a prime.

It is a super-2 number, since 2×27769196773² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27769197773) 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, 284536 + ... + 369457.

It is an arithmetic number, because the mean of its divisors is an integer number (6942473307).

Almost surely, 2^27769196773 is an apocalyptic number.

It is an amenable number.

27769196773 is a deficient number, since it is larger than the sum of its proper divisors (696455).

27769196773 is an equidigital number, since it uses as much as digits as its factorization.

27769196773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696454.

The product of its digits is 42007896, while the sum is 64.

Subtracting 27769196773 from its reverse (37769196772), we obtain a palindrome (9999999999).

The spelling of 27769196773 in words is "twenty-seven billion, seven hundred sixty-nine million, one hundred ninety-six thousand, seven hundred seventy-three".