27846928261 has 4 divisors (see below), whose sum is σ = 28122640524. Its totient is φ = 27571216000.

The previous prime is 27846928243. The next prime is 27846928289. The reversal of 27846928261 is 16282964872.

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 22498200036 + 5348728225 = 149994^2 + 73135^2 .

It is a cyclic number.

It is not a de Polignac number, because 27846928261 - 2¹¹ = 27846926213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27846922261) 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, 137855980 + ... + 137856181.

It is an arithmetic number, because the mean of its divisors is an integer number (7030660131).

Almost surely, 2^27846928261 is an apocalyptic number.

It is an amenable number.

27846928261 is a deficient number, since it is larger than the sum of its proper divisors (275712263).

27846928261 is a wasteful number, since it uses less digits than its factorization.

27846928261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275712262.

The product of its digits is 4644864, while the sum is 55.

The spelling of 27846928261 in words is "twenty-seven billion, eight hundred forty-six million, nine hundred twenty-eight thousand, two hundred sixty-one".