27804000461 has 2 divisors, whose sum is σ = 27804000462. Its totient is φ = 27804000460.

The previous prime is 27804000451. The next prime is 27804000503. The reversal of 27804000461 is 16400040872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19290432100 + 8513568361 = 138890^2 + 92269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27804000461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27804000401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902000230 + 13902000231.

It is an arithmetic number, because the mean of its divisors is an integer number (13902000231).

Almost surely, 2^27804000461 is an apocalyptic number.

It is an amenable number.

27804000461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27804000461 is an equidigital number, since it uses as much as digits as its factorization.

27804000461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 27804000461 in words is "twenty-seven billion, eight hundred four million, four hundred sixty-one", and thus it is an aban number.