27201552461 has 2 divisors, whose sum is σ = 27201552462. Its totient is φ = 27201552460.

The previous prime is 27201552437. The next prime is 27201552463. The reversal of 27201552461 is 16425510272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27070449961 + 131102500 = 164531^2 + 11450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27201552461 is a prime.

It is a Sophie Germain prime.

Together with 27201552463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27201552463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13600776230 + 13600776231.

It is an arithmetic number, because the mean of its divisors is an integer number (13600776231).

Almost surely, 2^27201552461 is an apocalyptic number.

It is an amenable number.

27201552461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27201552461 is an equidigital number, since it uses as much as digits as its factorization.

27201552461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 27201552461 in words is "twenty-seven billion, two hundred one million, five hundred fifty-two thousand, four hundred sixty-one".