27796196749 has 4 divisors (see below), whose sum is σ = 29431267164. Its totient is φ = 26161126336.

The previous prime is 27796196741. The next prime is 27796196797. The reversal of 27796196749 is 94769169772.

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 21329142025 + 6467054724 = 146045^2 + 80418^2 .

It is a cyclic number.

It is not a de Polignac number, because 27796196749 - 2³ = 27796196741 is a prime.

It is a super-3 number, since 3×27796196749³ (a number of 32 digits) contains 333 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 (27796196741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817535182 + ... + 817535215.

It is an arithmetic number, because the mean of its divisors is an integer number (7357816791).

Almost surely, 2^27796196749 is an apocalyptic number.

It is an amenable number.

27796196749 is a deficient number, since it is larger than the sum of its proper divisors (1635070415).

27796196749 is a wasteful number, since it uses less digits than its factorization.

27796196749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635070414.

The product of its digits is 72013536, while the sum is 67.

The spelling of 27796196749 in words is "twenty-seven billion, seven hundred ninety-six million, one hundred ninety-six thousand, seven hundred forty-nine".